---
cve: "CVE-2026-53382"
severity: "LOW"
cvss: 3.1
epss: "13%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-07-19 12:16:48"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T18:58:59+02:00"
---

# CVE-2026-53382

> 3.1 LOW

## Beschreibung

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:
 
 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

## Patch verfügbar (OSV)

- Kernel ≥ 5.10.260
- Kernel ≥ 5.15.211
- Kernel ≥ 6.1.177
- Kernel ≥ 6.6.144
- Kernel ≥ 6.12.95
- Kernel ≥ 6.18.37
- Kernel ≥ 7.0.14
- Kernel ≥ 7.1.2

## Referenzen

- <https://git.kernel.org/stable/c/455bc12e7b73ab5a2dfcb47822e91e772bc6c42e>
- <https://git.kernel.org/stable/c/f0f5a1d7056980a0d512456fdb370cfb72bba86a>
- <https://git.kernel.org/stable/c/6df7e16d4f742c80add58995a6e69385b97aa9e6>
- <https://git.kernel.org/stable/c/cd923dadefadb9671b5ac341b672ff424d429c39>
- <https://git.kernel.org/stable/c/353d9578951dd38bc9679308f5b618ceed1f20fa>
- <https://git.kernel.org/stable/c/f965cf22dda7f512f4922415894c3e528269a4ae>
- <https://git.kernel.org/stable/c/b28b12be6e8910489e6800ed93ea4d41dfe19683>
- <https://git.kernel.org/stable/c/232e4b313ea342672edf8947e067c0de4328405b>
- <https://git.kernel.org/stable/c/7d8bf3d8f91073f4db347ed3aa6302b56107499c>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53382) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_