CVE-2023-6931: high-severity vulnerability in Linux Kernel
Out-of-bounds write in Linux kernel's Performance Events system component
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.8epss 1.2%
A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation.
A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group().
We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux KernelRelated CVEs — Linux Kernel
In the same product, most dangerous first.
CVE-2023-0266HIGHUse after free in SNDRV_CTL_IOCTL_ELEM in Linux KernelEPSS 2.6%KEVCVE-2018-5390—Linux kernel versions 4.9+ can be forced to make very expensive calls to tcp_collapse_ofo_queue() and tcp_prune_ofo_queue() for every incoming packet which can lead to a denial of serviceEPSS 71.8%CVE-2023-2163CRITICALIncorrect Verifier Branch Pruning Logic Leads To Arbitrary Read/Write In Linux Kernel and Lateral Privilege EscalationEPSS 3.6%CVE-2022-42896HIGHInfo Leak in l2cap_core in the Linux KernelEPSS 2.5%CVE-2023-0045MEDIUMIncorrect indirect branch prediction barrier in the Linux KernelEPSS 2.4%CVE-2023-31248HIGHLinux Kernel nftables Use-After-Free Local Privilege Escalation VulnerabilityEPSS 1.9%
References
https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-398330.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-613116.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-794697.htmlhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1bhttps://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1bhttps://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlhttps://lists.debian.org/debian-lts-announce/2024/01/msg00005.html