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ExploitedIn CISA KEVFix available

CVE-2017-1000253

Exploitation confirmed. First attested on 2024-09-09 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2017-10-05
  • WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.

Timeline

dates in UTC
  1. 2017-10-0501:29CVE publishedNVD
  2. 2024-09-09Listed as exploited by GCVEGCVE
  3. 2024-09-09Exploitation first reportedCISA KEV
  4. 2024-09-09Added to the CISA KEV catalogCISA KEV
  5. 2024-09-1003:55SSVC exploitation set to activeCISA-ADP
  6. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  7. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-1000253?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-1000253?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP
Centos
BranchAffectedFixed in
6.0= 6.0no fix published
6.1= 6.1no fix published
6.2= 6.2no fix published
6.3= 6.3no fix published
6.4= 6.4no fix published
6.5= 6.5no fix published
6.6= 6.6no fix published
6.7= 6.7no fix published
6.8= 6.8no fix published
6.9= 6.9no fix published
7.1406= 7.1406no fix published
7.1503= 7.1503no fix published
Redhat enterprise linux
BranchAffectedFixed in
6.0= 6.0no fix published
6.1= 6.1no fix published
6.2= 6.2no fix published
6.3= 6.3no fix published
6.4= 6.4no fix published
6.5= 6.5no fix published
6.6= 6.6no fix published
6.7= 6.7no fix published
6.8= 6.8no fix published
6.9= 6.9no fix published
7.0= 7.0no fix published
7.1= 7.1no fix published
Linux linux kernel
BranchAffectedFixed in
4.0≥ 4.0, < 4.0.24.0.2
4.0≥ 1.0, < 4.0.24.0.2
3.19≥ 3.19, < 3.19.73.19.7
3.x≥ 3.17, < 3.18.143.18.14
3.x≥ 3.15, < 3.16.353.16.35
3.x≥ 3.13, < 3.14.413.14.41
3.x≥ 3.11, < 3.12.433.12.43
3.x≥ 3.5, < 3.10.773.10.77
3.x≥ 3.3, < 3.4.1093.4.109
3.2≥ 2.6.25, < 3.2.703.2.70

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. CISA’s required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.due 2024-09-30

Advisories and patches

Detection

read 2026-10-23 19:23 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedRicterZ/PIE-Stack-Clash-CVE-2017-1000253sxlmnwb/CVE-2017-1000253
PoC-in-GitHub

CISA Known Exploited Vulnerability

Date Added
2024-09-09
Patch Due Date
2024-09-30
Ransomware Use
Known
Required Action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Sources

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2017-10-05
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2017-1000253?

Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.

Is CVE-2017-1000253 actively exploited?

Yes. CVE-2017-1000253 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2024-09-30.

What is the CVSS score for CVE-2017-1000253?

CVE-2017-1000253 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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