CVE-2026-31599

MEDIUM EPSS 2.6%
Published Apr 24, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Apr 24, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix NULL pointer dereference in vidtv_channel_pmt_match_sections syzbot reported a general protection fault in vidtv_psi_desc_assign [1]. vidtv_psi_pmt_stream_init() can return NULL on memory allocation failure, but vidtv_channel_pmt_match_sections() does not check for this. When tail is NULL, the subsequent call to vidtv_psi_desc_assign(&tail->descriptor, desc) dereferences a NULL pointer offset, causing a general protection fault. Add a NULL check after vidtv_psi_pmt_stream_init(). On failure, clean up the already-allocated stream chain and return. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:vidtv_psi_desc_assign+0x24/0x90 drivers/media/test-drivers/vidtv/vidtv_psi.c:629 Call Trace: <TASK> vidtv_channel_pmt_match_sections drivers/media/test-drivers/vidtv/vidtv_channel.c:349 [inline] vidtv_channel_si_init+0x1445/0x1a50 drivers/media/test-drivers/vidtv/vidtv_channel.c:479 vidtv_mux_init+0x526/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:519 vidtv_start_streaming drivers/media/test-drivers/vidtv/vidtv_bridge.c:194 [inline] vidtv_start_feed+0x33e/0x4d0 drivers/media/test-drivers/vidtv/vidtv_bridge.c:239

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.10  –  <6.6.136
linuxlinux_kernel*≥6.7  –  <6.12.83
linuxlinux_kernel*≥6.13  –  <6.18.24
linuxlinux_kernel*≥6.19  –  <6.19.14
linuxlinux_kernel*≥7.0  –  <7.0.1

References 9

  • git.kernel.org https://git.kernel.org/stable/c/07c1e474cf9acf777f09d14a8f8dfcef5b84e46f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2dff11fb5098ae453651f8f77e94ad499c078022
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/54e18a23e62e81b8335cec3e8e9c5cb33fd88665
  • git.kernel.org https://git.kernel.org/stable/c/5c986b77200b5ea754ba6636deacc7e0942fec9b
  • git.kernel.org https://git.kernel.org/stable/c/93d9e747a9e8a5ca9e3c5e37dcff76b40399139f
  • git.kernel.org https://git.kernel.org/stable/c/b7efb4c94797c504a1c678edb48c2aa311d3309f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b832cfd516b8504e95884622cee60bf9a39b7945
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e589de36da106ef739ba98f66f5a5c2023370706
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f8e1fc918a9fe67103bcda01d20d745f264d00a7
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/07c1e474cf9acf777f09d14a8f8dfcef5b84e46f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2dff11fb5098ae453651f8f77e94ad499c078022
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b7efb4c94797c504a1c678edb48c2aa311d3309f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b832cfd516b8504e95884622cee60bf9a39b7945
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e589de36da106ef739ba98f66f5a5c2023370706
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f8e1fc918a9fe67103bcda01d20d745f264d00a7
    Patch