CVE-2026-31585

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 nfeeds state corruption on start_streaming failure syzbot reported a memory leak in vidtv_psi_service_desc_init [1]. When vidtv_start_streaming() fails inside vidtv_start_feed(), the nfeeds counter is left incremented even though no feed was actually started. This corrupts the driver state: subsequent start_feed calls see nfeeds > 1 and skip starting the mux, while stop_feed calls eventually try to stop a non-existent stream. This state corruption can also lead to memory leaks, since the mux and channel resources may be partially allocated during a failed start_streaming but never cleaned up, as the stop path finds dvb->streaming == false and returns early. Fix by decrementing nfeeds back when start_streaming fails, keeping the counter in sync with the actual number of active feeds. [1] BUG: memory leak unreferenced object 0xffff888145b50820 (size 32): comm "syz.0.17", pid 6068, jiffies 4294944486 backtrace (crc 90a0c7d4): vidtv_psi_service_desc_init+0x74/0x1b0 drivers/media/test-drivers/vidtv/vidtv_psi.c:288 vidtv_channel_s302m_init+0xb1/0x2a0 drivers/media/test-drivers/vidtv/vidtv_channel.c:83 vidtv_channels_init+0x1b/0x40 drivers/media/test-drivers/vidtv/vidtv_channel.c:524 vidtv_mux_init+0x516/0xbe0 drivers/media/test-drivers/vidtv/vidtv_mux.c:518 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-401

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/17cb7957c979529cc98ff57f7ac331532f1f7c83
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/25f19e476ab15defe698504212899fdb9f7cd61b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4bf95f797edd63c93330eafb6d6e670982344b9b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/60f768d46df561e06d92ffcacc00909f37a0f23d
  • git.kernel.org https://git.kernel.org/stable/c/80900b5424f3454256153ce386388df43b324f63
  • git.kernel.org https://git.kernel.org/stable/c/83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/98c22210aeadce67d9d20059f0dbbd01ba7fdbba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a0e5a598fe9a4612b852406b51153b881592aede
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f8cccb427e65d725fc0ba05e8900b4676eda268e

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/17cb7957c979529cc98ff57f7ac331532f1f7c83
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/25f19e476ab15defe698504212899fdb9f7cd61b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4bf95f797edd63c93330eafb6d6e670982344b9b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/98c22210aeadce67d9d20059f0dbbd01ba7fdbba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a0e5a598fe9a4612b852406b51153b881592aede
    Patch