CVE-2019-11596: canonical ubuntu_linux NULL Pointer Dereference
Vulnerability summary
CVE-2019-11596 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 2.96% chance of exploitation in the next 30 days, higher than 87.2% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 6 · Related 6Timeline
- 29-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and "lru temp_ttl" commands. This causes a denial of service when parsing crafted lru command messages in process_lru_command in memcached.c.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
2.96%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.96% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundMemcached
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat3 products
- memcached< 0:1.5.9-3.el8 | < 0:1.4.39-3.el7ost
- memcached-debuginfo< 0:1.5.9-3.el8 | < 0:1.4.39-3.el7ost
- memcached-debugsource< 0:1.5.9-3.el8
Mageia2 products
- memcached< 1.5.16-1.mga6
- memcached< 1.5.16-1.mga7
Canonical1 product
- ubuntu_linuxEOL18.04 | 18.10 | 19.04
Debian1 product
- memcached< 1.5.6-1.1
Memcached1 product
- memcached< 1.5.14
Ubuntu1 product
- memcached< 1.5.6-0ubuntu1.1
6 vendors · 9 products
References
23 links- github.com/memcached/memcached/commit/d35334f368817a77a6bd1f33c6a5676b2c402c02X Refsource MISCPatchThird Party Advisory
