CVE-2023-3609High· 7.8▾ MidnightPoC availableA use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing…
▾ 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 Jul 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
0.4% → 0.5%
1 GitHub repo
Last analysed / modified upstream
A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation.
If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.
We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.
linux_kernel >= 4.14, < 4.14.322linux_kernel >= 4.15, < 4.19.291linux_kernel >= 4.20, < 5.4.248linux_kernel >= 5.5, < 5.10.185linux_kernel >= 5.11, < 5.15.118linux_kernel >= 5.16, < 6.1.35linux_kernel >= 6.2, < 6.3.9linux_kernel = 6.4debian_linux = 10.0debian_linux = 11.0Upgrade past the affected range:
linux_kernel 6.3.9Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2023-4244High· 7.8A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set elemen…
CVE-2023-4622High· 7.8A 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…
CVE-2023-3390High· 7.8A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction caus…
CVE-2023-35823High· 7.0An issue was discovered in the Linux kernel before 6.3.2
CVE-2023-3268High· 7.1An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs
CVE-2023-42753High· 7.0An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel