CVE-2026-31585: linux
Vulnerability summary
CVE-2026-31585 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 45 · Related 46Timeline
- 24-04-2026PublishedVulnerability first disclosed.
- 14-06-2026Last modifiedVulnerability information updated.
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 metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.17%
Chance of exploitation in the next 30 days
Percentile
6%
Versus all other CVEs
30-day change
+0.04 pp
From 0.13% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu146 products
- linux< 5.15.0-186.196 | < 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-27.27
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1112.119 | < 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1008.8
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Chainguard9 products
- linux-aws-6.12< 6.12.85-r0
- linux-aws-6.18< 6.18.31-r0
- linux-azure-6.18< 6.18.31-r0
- linux-gcp-6.18< 6.18.31-r0
- linux-qemu-6.12< 6.12.85-r0
Linux2 products
- linux≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < f8cccb427e65d725fc0ba05e8900b4676eda268e | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 60f768d46df561e06d92ffcacc00909f37a0f23d | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 80900b5424f3454256153ce386388df43b324f63 | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 17cb7957c979529cc98ff57f7ac331532f1f7c83 | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 98c22210aeadce67d9d20059f0dbbd01ba7fdbba | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 25f19e476ab15defe698504212899fdb9f7cd61b | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 83110c2c8c46c035c2e0fc8ff3e4991183bf9ccd | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < 4bf95f797edd63c93330eafb6d6e670982344b9b | ≥ f90cf6079bf67988f8b1ad1ade70fc89d0080905, < a0e5a598fe9a4612b852406b51153b881592aede | 5.10
- linux_kernel≥ 5.10, < 6.6.136 | ≥ 6.7, < 6.12.83 | ≥ 6.13, < 6.18.24 | ≥ 6.19, < 6.19.14 | ≥ 7.0, < 7.0.1
Debian1 product
- linux< 6.1.176-1 | < 6.12.85-1 | < 6.19.14-1
4 vendors · 158 products
