CVE-2026-74436

🗓️ 17 Aug 2026 00:00:00Reported by ubuntu.comType

ubuntucve

ubuntucve🔗 ubuntu.com👁 6 Views

rxrpc use-after-free in preallocation worker during concurrent socket teardown of backlog rings.

Reporter	Title	Published	Views	Family All 13
ATTACKERKB	CVE-2026-74436	15 Aug 202605:59	–	attackerkb
Circl	CVE-2026-74436	17 Aug 202615:50	–	circl
CVE	CVE-2026-74436	15 Aug 202605:59	–	cve
Cvelist	CVE-2026-74436 rxrpc: serialize kernel accept preallocation with socket teardown	15 Aug 202605:59	–	cvelist
Debian	[SECURITY] [DLA 4745-1] linux-6.12 security update	18 Aug 202610:51	–	debian
Debian CVE	CVE-2026-74436	15 Aug 202605:59	–	debiancve
EUVD	EUVD-2026-59583	15 Aug 202605:59	–	euvd
NVD	CVE-2026-74436	15 Aug 202606:22	–	nvd
OSV	BELL-CVE-2026-74436	18 Aug 202606:06	–	osv
OSV	DEBIAN-CVE-2026-74436	15 Aug 202606:22	–	osv

OS	OS Version	Architecture	Package	Package Version	Filename
Ubuntu	18.04	all	linux	0	linux_0_all.deb
Ubuntu	20.04	all	linux	0	linux_0_all.deb
Ubuntu	22.04	all	linux	0	linux_0_all.deb
Ubuntu	24.04	all	linux	0	linux_0_all.deb
Ubuntu	26.04	all	linux	0	linux_0_all.deb
Ubuntu	16.04	all	linux-hwe	0	linux-hwe_0_all.deb
Ubuntu	18.04	all	linux-hwe-5.4	0	linux-hwe-5.4_0_all.deb
Ubuntu	20.04	all	linux-hwe-5.15	0	linux-hwe-5.15_0_all.deb
Ubuntu	22.04	all	linux-hwe-6.8	0	linux-hwe-6.8_0_all.deb
Ubuntu	24.04	all	linux-hwe-6.17	0	linux-hwe-6.17_0_all.deb

Source	Link
cve	www.cve.org/CVERecord
git	www.git.kernel.org/linus/dc175389b18c29a5303ee83169ec653adfae3e17%20(7.2-rc1)
git	www.git.kernel.org/stable/c/0337cdba0c477f176c0459bed012109453184573
git	www.git.kernel.org/stable/c/1741378a7a83dfd8e53a9196730df709b903cd33
git	www.git.kernel.org/stable/c/35a967ff8b24db09ee429c39c5b5e6571639997d
git	www.git.kernel.org/stable/c/dc175389b18c29a5303ee83169ec653adfae3e17
git	www.git.kernel.org/stable/c/dfa0b2bbc5e50119f89c6b5407faa5ed86dfa7c5

17 Aug 2026 14:44Current

5.4Medium risk

Vulners AI Score5.4

CVSS 3.19.8

EPSS0.00364

rxrpc use after free socket teardown kernel vulnerability preallocation race condition