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vuln-cve/data/2025/38xxx/CVE-2025-38214.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2025-38214",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2025-04-16T04:51:23.995Z",
"datePublished": "2025-07-04T13:37:32.410Z",
"dateUpdated": "2026-11-05T20:52:21.027Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-05-11T21:23:26.706Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: Fix fb_set_var to prevent null-ptr-deref in fb_videomode_to_var\n\nIf fb_add_videomode() in fb_set_var() fails to allocate memory for\nfb_videomode, later it may lead to a null-ptr dereference in\nfb_videomode_to_var(), as the fb_info is registered while not having the\nmode in modelist that is expected to be there, i.e. the one that is\ndescribed in fb_info->var.\n\n================================================================\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 1 PID: 30371 Comm: syz-executor.1 Not tainted 5.10.226-syzkaller #0\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014\nRIP: 0010:fb_videomode_to_var+0x24/0x610 drivers/video/fbdev/core/modedb.c:901\nCall Trace:\n display_to_var+0x3a/0x7c0 drivers/video/fbdev/core/fbcon.c:929\n fbcon_resize+0x3e2/0x8f0 drivers/video/fbdev/core/fbcon.c:2071\n resize_screen drivers/tty/vt/vt.c:1176 [inline]\n vc_do_resize+0x53a/0x1170 drivers/tty/vt/vt.c:1263\n fbcon_modechanged+0x3ac/0x6e0 drivers/video/fbdev/core/fbcon.c:2720\n fbcon_update_vcs+0x43/0x60 drivers/video/fbdev/core/fbcon.c:2776\n do_fb_ioctl+0x6d2/0x740 drivers/video/fbdev/core/fbmem.c:1128\n fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1203\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739\n do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46\n entry_SYSCALL_64_after_hwframe+0x67/0xd1\n================================================================\n\nThe reason is that fb_info->var is being modified in fb_set_var(), and\nthen fb_videomode_to_var() is called. If it fails to add the mode to\nfb_info->modelist, fb_set_var() returns error, but does not restore the\nold value of fb_info->var. Restore fb_info->var on failure the same way\nit is done earlier in the function.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
}
],
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"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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],
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{
"version": "2.6.12",
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},
{
"version": "0",
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"status": "unaffected",
"versionType": "semver"
},
{
"version": "5.4.295",
"lessThanOrEqual": "5.4.*",
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},
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"lessThanOrEqual": "5.10.*",
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{
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{
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{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"url": "https://git.kernel.org/stable/c/1a10d91766eb6ddfd5414e4785611e33a4fe0f9b"
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"url": "https://git.kernel.org/stable/c/ff0e037241173b574b385bff53d67567b9816db5"
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"url": "https://git.kernel.org/stable/c/3ca78032a388a0795201792b36e6fc9b6e6e8eed"
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"url": "https://git.kernel.org/stable/c/05f6e183879d9785a3cdf2f08a498bc31b7a20aa"
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"title": "fbdev: Fix fb_set_var to prevent null-ptr-deref in fb_videomode_to_var",
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"engine": "bippy-1.2.0"
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"adp": [
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"title": "CVE Program Container",
"references": [
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"url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
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},
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"metrics": [
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"content": {
"id": "CVE-2025-38214",
"role": "CISA Coordinator",
"options": [
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{
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"version": "2.0.3",
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