146 lines
7.1 KiB
JSON
146 lines
7.1 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-2022-49940",
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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": "2025-05-01T14:05:17.255Z",
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"datePublished": "2025-06-18T10:54:40.745Z",
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"dateUpdated": "2026-05-23T15:23:19.793Z"
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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": "2026-05-23T15:23:19.793Z"
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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\ntty: n_gsm: add sanity check for gsm->receive in gsm_receive_buf()\n\nA null pointer dereference can happen when attempting to access the\n\"gsm->receive()\" function in gsmld_receive_buf(). Currently, the code\nassumes that gsm->recieve is only called after MUX activation.\nSince the gsmld_receive_buf() function can be accessed without the need to\ninitialize the MUX, the gsm->receive() function will not be set and a\nNULL pointer dereference will occur.\n\nFix this by avoiding the call to \"gsm->receive()\" in case the function is\nnot initialized by adding a sanity check.\n\nCall Trace:\n <TASK>\n gsmld_receive_buf+0x1c2/0x2f0 drivers/tty/n_gsm.c:2861\n tiocsti drivers/tty/tty_io.c:2293 [inline]\n tty_ioctl+0xa75/0x15d0 drivers/tty/tty_io.c:2692\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:870 [inline]\n __se_sys_ioctl fs/ioctl.c:856 [inline]\n __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd"
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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/tty/n_gsm.c"
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],
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"versions": [
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{
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"version": "b8faa754b523a845facdc83120b2ecd290d7fa6d",
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"lessThan": "5a82cf64f8ad63caf6bf115642ce44ddbc64311e",
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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": "dfa9b6d34aac2154b5e926d7a7a061123bf137c6",
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"lessThan": "309aea4b6b813f6678c3a547cfd7fe3a76ffa976",
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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": "5e59c010c6862da329db17acca086afd8bea1aa8",
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"lessThan": "5aa37f9510345a812c0998bcbbc4d88d1dcc4d8b",
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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": "01aecd917114577c423f07cec0d186ad007d76fc",
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"lessThan": "f16c6d2e58a4c2b972efcf9eb12390ee0ba3befb",
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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": "2dc1be365a70699f7dda92fd9e48b84546086070",
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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": "5.18.18",
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"lessThan": "5.19",
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"status": "affected",
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"versionType": "semver"
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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": "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/tty/n_gsm.c"
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],
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"versions": [
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{
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"version": "5.15.61",
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"lessThan": "5.15.66",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.19.2",
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"lessThan": "5.19.8",
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"status": "affected",
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"versionType": "semver"
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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": "5.15.61",
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"versionEndExcluding": "5.15.66"
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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": "5.19.2",
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"versionEndExcluding": "5.19.8"
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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": "5.18.18"
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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/5a82cf64f8ad63caf6bf115642ce44ddbc64311e"
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},
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{
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"url": "https://git.kernel.org/stable/c/309aea4b6b813f6678c3a547cfd7fe3a76ffa976"
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},
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{
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"url": "https://git.kernel.org/stable/c/5aa37f9510345a812c0998bcbbc4d88d1dcc4d8b"
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},
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{
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"url": "https://git.kernel.org/stable/c/f16c6d2e58a4c2b972efcf9eb12390ee0ba3befb"
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}
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],
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"title": "tty: n_gsm: add sanity check for gsm->receive in gsm_receive_buf()",
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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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}
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} |