CVE-2026-53258: wifi: fix leak if split 6 GHz scanning fails
Vulnerability summary
CVE-2026-53258 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.4% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 23 · Related 23Timeline
- 25-06-2026PublishedVulnerability first disclosed.
- 30-10-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: fix leak if split 6 GHz scanning fails rdev->int_scan_req is leaked if cfg80211_scan() fails. Note that it's supposed to be released at ___cfg80211_scan_done() but this doesn't happen as rdev->scan_req is NULL at that point, too, leading to the early return from the freeing function. unreferenced object 0xffff8881161d0800 (size 512): comm "wpa_supplicant", pid 379, jiffies 4294749765 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 f0 81 13 16 81 88 ff ff ................ backtrace (crc c867fdb6): kmemleak_alloc+0x89/0x90 __kmalloc_noprof+0x2fd/0x410 cfg80211_scan+0x133/0x730 nl80211_trigger_scan+0xc69/0x1cc0 genl_family_rcv_msg_doit+0x204/0x2f0 genl_rcv_msg+0x431/0x6b0 netlink_rcv_skb+0x143/0x3f0 genl_rcv+0x27/0x40 netlink_unicast+0x4f6/0x820 netlink_sendmsg+0x797/0xce0 __sock_sendmsg+0xc4/0x160 ____sys_sendmsg+0x5e4/0x890 ___sys_sendmsg+0xf8/0x180 __sys_sendmsg+0x136/0x1e0 __x64_sys_sendmsg+0x76/0xc0 x64_sys_call+0x13f0/0x17d0 Found by Linux Verification Center (linuxtesting.org).
CVSS metrics
4 scores · 3 sources · 2 versions- 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
0.16%
Chance of exploitation in the next 30 days
Percentile
5%
Versus all other CVEs
30-day change
Increase +0.05 pp
From 0.11% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
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) | < 7.0.0-31.31
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 7.0.0-1012.12
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Chainguard11 products
- linux-aws-6.12All versions (No fix recorded)
- linux-azure-6.12All versions (No fix recorded)
- linux-azure-6.18< 6.18.38-r0
- linux-gcp-6.12All versions (No fix recorded)
- linux-gcp-6.18< 6.18.38-r0
Linux2 products
- linux≥ c8cb5b854b40f2ce52ccd032fa19750f4181d5fc, < c3d30daf03130cf35c0e70185719ce16fc3ea6c4 | ≥ c8cb5b854b40f2ce52ccd032fa19750f4181d5fc, < 87484866cae9130b97c2b356eeaea4f47b292f75 | ≥ c8cb5b854b40f2ce52ccd032fa19750f4181d5fc, < df44397bbd8f3a38115c9590b686787e4aaf6327 | ≥ c8cb5b854b40f2ce52ccd032fa19750f4181d5fc, < fb8db813eba2e56ee001c9fb5c2ce2cb78c42642 | ≥ c8cb5b854b40f2ce52ccd032fa19750f4181d5fc, < a24134ddc18b4d440714365637d440b7121447b9 | ≥ c8cb5b854b40f2ce52ccd032fa19750f4181d5fc, < e8694f7cc29287e843648d1075177b9a2000d957 | 5.10
- linux_kernel≥ 5.10, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.115-2 | < 7.0.13-1
4 vendors · 171 products
