CVE-2011-1020
The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a…
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the /proc directory tree of a process after this process performs an exec of a setuid program, which allows local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write system calls.
Timeline
ID reserved
By redhat
- 14 days later
· 14 days later
Published
- 13 years later
· 13 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 0.92% · top 39% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.6.
Weakness
Affected products
n/a
- affected n/a
References (15)
- kernel-procpid-security-bypass(65693) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 8107 (opens in a new tab)third-party-advisoryx_refsource_SREASONx_transferred
- 43496 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20110224 CVE request: kernel: /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20110208 Re: [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [oss-security] 20110225 Re: CVE request: kernel: /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20110207 Re: [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20110209 Re: [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 46567 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [linux-kernel] 20110207 [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20110209 Re: [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20110207 Re: [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [linux-kernel] 20110208 Re: [SECURITY] /proc/$pid/ leaks contents across setuid exec (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 20110122 Proc filesystem and SUID-Binaries (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- http://www.halfdog.net/Security/2011/SuidBinariesAndProcInterface/ (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2011-1020)Record last updated .