CVE-2022-39377
On 32 bit systems, in versions 9.1.16 and newer but prior to 12.7.1, allocate_structures contains a size_t overflow in sa_common.c.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
sysstat is a set of system performance tools for the Linux operating system. On 32 bit systems, in versions 9.1.16 and newer but prior to 12.7.1, allocate_structures contains a size_t overflow in sa_common.c. The allocate_structures function insufficiently checks bounds before arithmetic multiplication, allowing for an overflow in the size allocated for the buffer representing system activities. This issue may lead to Remote Code Execution (RCE). This issue has been patched in version 12.7.1.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.27% probability · 70th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120, CWE-131
- Affected
- sysstat project/sysstat · debian/debian linux · fedoraproject/fedora
- Source
- security-advisories@github.com
EPSS 1.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/sysstat/sysstat/security/advisories/GHSA-q8r6-g56f-9w7xExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00014.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6F26ALXWYHT4LN2AHPZM34OQEXTJE3JZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7X6WKTODOUDV6M3HZMASYNZP6EM4N7W4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PHUVUDIVDJZ7AVXD3XX3NBXXXKPOKN3N/
- https://security.gentoo.org/glsa/202211-07Third Party Advisory
- https://github.com/sysstat/sysstat/security/advisories/GHSA-q8r6-g56f-9w7xExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00014.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6F26ALXWYHT4LN2AHPZM34OQEXTJE3JZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7X6WKTODOUDV6M3HZMASYNZP6EM4N7W4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PHUVUDIVDJZ7AVXD3XX3NBXXXKPOKN3N/
- https://security.gentoo.org/glsa/202211-07Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.