CVE-2023-35788: canonical ubuntu_linux Out-of-bounds Write
Vulnerability summary
CVE-2023-35788 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 44.4% of scored vulnerabilities. 2 public exploits are recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 55 · Related 27Timeline
- 16-06-2023PublishedVulnerability first disclosed.
- 18-09-2026Last modifiedVulnerability information updated.
Description
An issue was discovered in fl_set_geneve_opt in net/sched/cls_flower.c in the Linux kernel before 6.3.7. It allows an out-of-bounds write in the flower classifier code via TCA_FLOWER_KEY_ENC_OPTS_GENEVE packets. This may result in denial of service or privilege escalation.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · Red hatEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.52%
Chance of exploitation in the next 30 days
Percentile
44%
Versus all other CVEs
30-day change
Decrease -0.01 pp
From 0.53% 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
2 foundExploit Reference (openwall.com)
Maturity: unknown
Exploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu98 products
- linux< 5.4.0-153.170 | < 5.15.0-76.83
- linux-allwinner-5.19< 5.19.0-1015.15~22.04.1
- linux-aws< 5.4.0-1105.113 | < 5.15.0-1039.44
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Redhat37 products
- bpftool< 0:3.10.0-1062.77.1.el7
- bpftool-debuginfo< 0:3.10.0-1062.77.1.el7
- kernel< 0:3.10.0-1062.77.1.el7
- kernel-abi-whitelists< 0:3.10.0-1062.77.1.el7
- kernel-bootwrapper< 0:3.10.0-1062.77.1.el7
Netapp5 products
Debian2 products
- linux< 6.1.37-1 | < 6.3.7-1
- debian_linuxEOL12.0 | 10.0 | 11.0
Suse2 products
- kernel-livepatch-SLE15-SP4_Update_13&distro=SUSE Linux Enterprise Live Patching 15 SP4< 2-150400.2.1
- kernel-livepatch-SLE15-SP4-RT_Update_7&distro=SUSE Linux Enterprise Live Patching 15 SP4< 4-150400.2.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 20.04 | 22.04
Linux1 product
- linux_kernel≥ 4.19, < 4.19.285 | ≥ 4.20, < 5.4.246 | ≥ 5.5, < 5.10.183 | ≥ 5.11, < 5.15.116 | ≥ 5.16, < 6.1.33 | ≥ 6.2, < 6.3.7
7 vendors · 146 products
References
41 links
- security.netapp.com/advisory/ntap-20230714-0002/Third Party Advisory
- packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.htmlThird Party AdvisoryVDB Entry
