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CVE-2026-98404— drm/virtio: Fix a NULL vs ERR_PTR() bug in virtio_gpu_user_framebuffer_create()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： drm/virtio：修复 virtio_gpu_user_framebuffer_create() 函数中 NULL 与 ERR_PTR() 的混淆问题 Smatch 工具指出，此处返回 NULL 将导致在 drm_mode_addfb2() 中出现空指针解引用错误。因此，应改为返回错误指针（ERR_PTR）。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P12

Possible ATT&CK Techniques 1 AI

T1069.006

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux dc5698e80cf724770283e10414054662bdf6ccfa< 975f3cf302bb7d7336df4c630a7c07e12780ad10 affected
dc5698e80cf724770283e10414054662bdf6ccfa< 07de0b31dd64094cd7d25729beaf2ecae74daa72 affected
dc5698e80cf724770283e10414054662bdf6ccfa< 5eda6cda0031ba17559d56882353be39e568ec09 affected
dc5698e80cf724770283e10414054662bdf6ccfa< 3fe8a33715265ecb24ca0bcd0a575c926da4277c affected
dc5698e80cf724770283e10414054662bdf6ccfa< 974845d2535a250b180e62f9ed50284f312c01a3 affected
dc5698e80cf724770283e10414054662bdf6ccfa< 45dc2788a5b0e1e2824d1f98af521bd3acc340d7 affected
dc5698e80cf724770283e10414054662bdf6ccfa< f1050a7d365283678b253828739d3866ae546a72 affected
dc5698e80cf724770283e10414054662bdf6ccfa< 94579f24e2b526a04eb41050af0ba018c6f528e7 affected
… +10 more rows
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I. Basic Information for CVE-2026-98404

Vulnerability Information
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Vulnerability Title
drm/virtio: Fix a NULL vs ERR_PTR() bug in virtio_gpu_user_framebuffer_create()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: Fix a NULL vs ERR_PTR() bug in virtio_gpu_user_framebuffer_create() Smatch complains that returning a NULL here will lead to a NULL pointer dereference in drm_mode_addfb2(). Return an error pointer instead.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux dc5698e80cf724770283e10414054662bdf6ccfa ~ 975f3cf302bb7d7336df4c630a7c07e12780ad10 -
Linux Linux 4.2 -

II. Public POCs for CVE-2026-98404

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III. Intelligence Information for CVE-2026-98404

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Other References for CVE-2026-98404 (8)

Same Patch Batch · Linux · 2026-10-14 · 46 CVEs total

CVE-2026-98398 locking/lockdep: Invalidate stale class_cache entries for zapped classes
CVE-2026-98396 powerpc: Do not restore KUAP in arch_exit_to_user_mode_prepare()
CVE-2026-98393 net: ipv4: Fix UDP length overflow with PMTU discover and big MTU
CVE-2026-98391 drm/xe: Guard page-fault worker with runtime PM check
CVE-2026-98389 drm/amdgpu: skip gfx switch_power_profile during GPU reset
CVE-2026-98388 exec: do_close_on_exec() before taking exec_update_lock
CVE-2026-98387 s390/crypto: Fix skcipher_walk return code handling in aes_s390
CVE-2026-98386 scsi: qla2xxx: Use memset_io() to clear QLAFX00 request ring slot
CVE-2026-98390 x86/amd_node: Avoid divide by zero on virtualized systems
CVE-2026-98397 platform/x86: x86-android-tablets: hold device reference for secondary fwnode teardown
CVE-2026-98395 powerpc/entry: Fix irq_soft_mask corruption on replayed interrupt exit
CVE-2026-98399 s390/ipl: Fix NULL deref in dump_reipl without re-IPL parm block
CVE-2026-98400 s390/ipl: Fix NULL deref in kdump without re-IPL parm block
CVE-2026-98402 net: icmp: avoid invalid transport header access in icmp_send tracepoint
CVE-2026-98401 net: iptunnel: fix stale transport header during tunnel decapsulation
CVE-2026-98403 s390/boot: Avoid IPL parameter append past command line
CVE-2026-98405 smb: client: fix missing iov bounds check in parse_posix_sids()
CVE-2026-98406 wifi: mac80211: avoid WARN in set_bitrate_mask when sdata not in driver
CVE-2026-98408 watchdog: rzv2h: Avoid division by zero
CVE-2026-98407 wifi: rsi: fix heap OOB write on key removal

Showing top 20 of 46 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98404

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