CVE-2023-52887: net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new
Vulnerability summary
CVE-2023-52887 is a high (CVSS 7.5) Reachable Assertion vulnerability in linux. EPSS estimates a 0.67% chance of exploitation in the next 30 days, higher than 52% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 31 · Related 30Timeline
- 29-07-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: net: can: j1939: enhanced error handling for tightly received RTS messages in xtp_rx_rts_session_new This patch enhances error handling in scenarios with RTS (Request to Send) messages arriving closely. It replaces the less informative WARN_ON_ONCE backtraces with a new error handling method. This provides clearer error messages and allows for the early termination of problematic sessions. Previously, sessions were only released at the end of j1939_xtp_rx_rts(). Potentially this could be reproduced with something like: testj1939 -r vcan0:0x80 & while true; do # send first RTS cansend vcan0 18EC8090#1014000303002301; # send second RTS cansend vcan0 18EC8090#1014000303002301; # send abort cansend vcan0 18EC8090#ff00000000002301; done
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.67%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.67% 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
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu125 products
- linux< 5.4.0-195.215 | < 5.15.0-121.131 | < 6.8.0-48.48
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1132.142 | < 5.15.0-1069.75 | < 6.8.0-1018.20
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 9d71dd0c70099914fcd063135da3c580865e924c, < ed581989d7ea9df6f8646beba2341e32cd49a1f9 | ≥ 9d71dd0c70099914fcd063135da3c580865e924c, < f6c839e717901dbd6b1c1ca807b6210222eb70f6 | ≥ 9d71dd0c70099914fcd063135da3c580865e924c, < 1762ca80c2b72dd1b5821c5e347713ae696276ea | ≥ 9d71dd0c70099914fcd063135da3c580865e924c, < 26b18dd30e63d4fd777be429148e8e4ed66f60b2 | ≥ 9d71dd0c70099914fcd063135da3c580865e924c, < 177e33b655d35d72866b50aec84307119dc5f3d4 | ≥ 9d71dd0c70099914fcd063135da3c580865e924c, < 0bc0a7416ea73f79f915c9a05ac0858dff65cfed | ≥ 9d71dd0c70099914fcd063135da3c580865e924c, < d3e2904f71ea0fe7eaff1d68a2b0363c888ea0fb | 5.4
- linux_kernel≥ 5.4, < 5.4.279 | ≥ 5.5, < 5.10.221 | ≥ 5.11, < 5.15.162 | ≥ 5.16, < 6.1.97 | ≥ 6.2, < 6.6.37 | ≥ 6.7, < 6.9.8 | 6.10:rc1 | 6.10:rc2 | 6.10:rc3 | 6.10:rc4 | 6.10:rc5
Debian1 product
- linux< 6.1.98-1 | < 6.9.8-1
3 vendors · 128 products
