5.5

CVE-2026-53382: media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si

Analyzed
AliasesUBUNTU-CVE-2026-53382DEBIAN-CVE-2026-53382
Published 19-07-2026Last modified 17-08-2026

Vulnerability summary

CVE-2026-53382 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 32 · Related 31
MGASA-2026-0312OPENSUSE-SU-2026:11339-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1

Timeline

  1. 19-07-2026
    PublishedVulnerability first disclosed.
  2. 17-08-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: media: vidtv: fix NULL pointer dereference in vidtv_mux_push_si syzbot reported a general protection fault in vidtv_psi_ts_psi_write_into [1]. vidtv_mux_get_pid_ctx() can return NULL, but vidtv_mux_push_si() does not check for this before dereferencing the returned pointer to access the continuity counter. This leads to a general protection fault when accessing a near-NULL address. The root cause is that vidtv_mux_pid_ctx_init() does not check the return value of vidtv_mux_create_pid_ctx_once() for PMT section PIDs. If the allocation fails, the PID context is never created, but init returns success. The subsequent vidtv_mux_push_si() call then gets NULL from vidtv_mux_get_pid_ctx() and crashes. Fix both the root cause (add error check in vidtv_mux_pid_ctx_init for PMT PIDs) and add defensive NULL checks in vidtv_mux_push_si for all vidtv_mux_get_pid_ctx() calls. [1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Workqueue: events vidtv_mux_tick RIP: 0010:vidtv_psi_ts_psi_write_into+0x54a/0xbc0 drivers/media/test-drivers/vidtv/vidtv_psi.c:197 Call Trace: <TASK> vidtv_psi_table_header_write_into drivers/media/test-drivers/vidtv/vidtv_psi.c:799 [inline] vidtv_psi_pmt_write_into+0x3b2/0xa70 drivers/media/test-drivers/vidtv/vidtv_psi.c:1231 vidtv_mux_push_si+0x932/0xe80 drivers/media/test-drivers/vidtv/vidtv_mux.c:196 vidtv_mux_tick+0xe9b/0x1480 drivers/media/test-drivers/vidtv/vidtv_mux.c:408

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 455bc12e7b73ab5a2dfcb47822e91e772bc6c42e | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < f0f5a1d7056980a0d512456fdb370cfb72bba86a | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 6df7e16d4f742c80add58995a6e69385b97aa9e6 | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < cd923dadefadb9671b5ac341b672ff424d429c39 | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 353d9578951dd38bc9679308f5b618ceed1f20fa | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < f965cf22dda7f512f4922415894c3e528269a4ae | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < b28b12be6e8910489e6800ed93ea4d41dfe19683 | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 232e4b313ea342672edf8947e067c0de4328405b | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 7d8bf3d8f91073f4db347ed3aa6302b56107499c | 5.10
  • linux_kernel≥ 5.10, < 5.10.260 | ≥ 5.11, < 5.15.211 | ≥ 5.16, < 6.1.177 | ≥ 6.2, < 6.6.144 | ≥ 6.7, < 6.12.95 | ≥ 6.13, < 6.18.37 | ≥ 6.19, < 7.0.14 | ≥ 7.1, < 7.1.2
Debian1 product
  • linux< 6.1.177-1 | < 6.12.95-1 | < 7.0.14-1

3 vendors · 160 products

References

32 links
Show all 32 references