268 lines
13 KiB
JSON
268 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2022-49871",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-05-01T14:05:17.238Z",
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"datePublished": "2025-05-01T14:10:21.760Z",
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"dateUpdated": "2026-05-11T19:08:21.371Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T19:08:21.371Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tun: Fix memory leaks of napi_get_frags\n\nkmemleak reports after running test_progs:\n\nunreferenced object 0xffff8881b1672dc0 (size 232):\n comm \"test_progs\", pid 394388, jiffies 4354712116 (age 841.975s)\n hex dump (first 32 bytes):\n e0 84 d7 a8 81 88 ff ff 80 2c 67 b1 81 88 ff ff .........,g.....\n 00 40 c5 9b 81 88 ff ff 00 00 00 00 00 00 00 00 .@..............\n backtrace:\n [<00000000c8f01748>] napi_skb_cache_get+0xd4/0x150\n [<0000000041c7fc09>] __napi_build_skb+0x15/0x50\n [<00000000431c7079>] __napi_alloc_skb+0x26e/0x540\n [<000000003ecfa30e>] napi_get_frags+0x59/0x140\n [<0000000099b2199e>] tun_get_user+0x183d/0x3bb0 [tun]\n [<000000008a5adef0>] tun_chr_write_iter+0xc0/0x1b1 [tun]\n [<0000000049993ff4>] do_iter_readv_writev+0x19f/0x320\n [<000000008f338ea2>] do_iter_write+0x135/0x630\n [<000000008a3377a4>] vfs_writev+0x12e/0x440\n [<00000000a6b5639a>] do_writev+0x104/0x280\n [<00000000ccf065d8>] do_syscall_64+0x3b/0x90\n [<00000000d776e329>] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nThe issue occurs in the following scenarios:\ntun_get_user()\n napi_gro_frags()\n napi_frags_finish()\n case GRO_NORMAL:\n gro_normal_one()\n list_add_tail(&skb->list, &napi->rx_list);\n <-- While napi->rx_count < READ_ONCE(gro_normal_batch),\n <-- gro_normal_list() is not called, napi->rx_list is not empty\n <-- not ask to complete the gro work, will cause memory leaks in\n <-- following tun_napi_del()\n...\ntun_napi_del()\n netif_napi_del()\n __netif_napi_del()\n <-- &napi->rx_list is not empty, which caused memory leaks\n\nTo fix, add napi_complete() after napi_gro_frags()."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/tun.c"
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],
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"versions": [
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{
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"version": "90e33d45940793def6f773b2d528e9f3c84ffdc7",
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"lessThan": "223ef6a94e52331a6a7ef31e59921e0e82d2d40a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "90e33d45940793def6f773b2d528e9f3c84ffdc7",
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"lessThan": "a4f73f6adc53fd7a3f9771cbc89a03ef39b0b755",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "90e33d45940793def6f773b2d528e9f3c84ffdc7",
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"lessThan": "3401f964028ac941425b9b2c8ff8a022539ef44a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "90e33d45940793def6f773b2d528e9f3c84ffdc7",
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"lessThan": "d7569302a7a52a9305d2fb054df908ff985553bb",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "90e33d45940793def6f773b2d528e9f3c84ffdc7",
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"lessThan": "8b12a020b20a78f62bedc50f26db3bf4fadf8cb9",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "90e33d45940793def6f773b2d528e9f3c84ffdc7",
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"lessThan": "1118b2049d77ca0b505775fc1a8d1909cf19a7ec",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/net/tun.c"
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],
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"versions": [
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{
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"version": "4.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "4.19.267",
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"lessThanOrEqual": "4.19.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.4.225",
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"lessThanOrEqual": "5.4.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.155",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.79",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.0.9",
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"lessThanOrEqual": "6.0.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "4.19.267"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "5.4.225"
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.15",
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"versionEndExcluding": "6.0.9"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/223ef6a94e52331a6a7ef31e59921e0e82d2d40a"
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},
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{
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"url": "https://git.kernel.org/stable/c/a4f73f6adc53fd7a3f9771cbc89a03ef39b0b755"
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},
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{
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"url": "https://git.kernel.org/stable/c/3401f964028ac941425b9b2c8ff8a022539ef44a"
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},
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{
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"url": "https://git.kernel.org/stable/c/d7569302a7a52a9305d2fb054df908ff985553bb"
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},
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{
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"url": "https://git.kernel.org/stable/c/8b12a020b20a78f62bedc50f26db3bf4fadf8cb9"
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},
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{
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"url": "https://git.kernel.org/stable/c/1118b2049d77ca0b505775fc1a8d1909cf19a7ec"
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}
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],
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"title": "net: tun: Fix memory leaks of napi_get_frags",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"cweId": "CWE-401",
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"lang": "en",
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"description": "CWE-401 Missing Release of Memory after Effective Lifetime"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 5.5,
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"attackVector": "LOCAL",
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"confidentialityImpact": "NONE"
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}
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},
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2025-10-01T16:03:55.727122Z",
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"id": "CVE-2022-49871",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-10-01T16:03:58.029Z"
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}
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}
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]
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}
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} |