CVE-2023-4622High· 7.8▾ MidnightPoC availableA use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation. The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without lock…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 42.9 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Sep 11.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.6%
0.6% → 0.6%
1 GitHub repo
Last analysed / modified upstream
A use-after-free vulnerability in the Linux kernel's af_unix component can be exploited to achieve local privilege escalation.
The unix_stream_sendpage() function tries to add data to the last skb in the peer's recv queue without locking the queue. Thus there is a race where unix_stream_sendpage() could access an skb locklessly that is being released by garbage collection, resulting in use-after-free.
We recommend upgrading past commit 790c2f9d15b594350ae9bca7b236f2b1859de02c (or backported equivalents).
linux_kernel >= 4.2, < 4.14.324linux_kernel >= 4.15, < 4.19.293linux_kernel >= 4.20, < 5.4.255linux_kernel >= 5.5, < 5.10.192linux_kernel >= 5.11, < 5.15.128linux_kernel >= 5.16, < 6.1.47linux_kernel >= 6.2, < 6.4.12debian_linux = 10.0debian_linux = 12.0Upgrade past the affected range:
linux_kernel 6.4.12Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2021-44879Medium· 5.5In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
CVE-2022-32250High· 7.8net/netfilter/nf_tables_api.c in the Linux kernel through 5.18.1 allows a local user (able to create user/net namespaces) to escalate privileges to root because an incorrect NFT_STATEFUL_EXPR check leads to a use-after-free.
CVE-2022-1679High· 7.8A use-after-free flaw was found in the Linux kernel’s Atheros wireless adapter driver in the way a user forces the ath9k_htc_wait_for_target function to fail with some input messages
CVE-2022-1055High· 7.8A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation
CVE-2022-3625Medium· 4.6A vulnerability was found in Linux Kernel
CVE-2022-3586Medium· 5.5A flaw was found in the Linux kernel’s networking code