7.8

CVE-2024-38599: linux Out-of-bounds Read

CVSS: 7.8v3.1HighModified
AliasesUBUNTU-CVE-2024-38599DEBIAN-CVE-2024-38599
Published 19-06-2024Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-38599 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.7% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 42 · Related 38
DLA-3840-1DSA-5730-1MGASA-2024-0263MGASA-2024-0266SUSE-SU-2024:2372-1SUSE-SU-2024:2394-1

Timeline

  1. 19-06-2024
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: jffs2: prevent xattr node from overflowing the eraseblock Add a check to make sure that the requested xattr node size is no larger than the eraseblock minus the cleanmarker. Unlike the usual inode nodes, the xattr nodes aren't split into parts and spread across multiple eraseblocks, which means that a xattr node must not occupy more than one eraseblock. If the requested xattr value is too large, the xattr node can spill onto the next eraseblock, overwriting the nodes and causing errors such as: jffs2: argh. node added in wrong place at 0x0000b050(2) jffs2: nextblock 0x0000a000, expected at 0000b00c jffs2: error: (823) do_verify_xattr_datum: node CRC failed at 0x01e050, read=0xfc892c93, calc=0x000000 jffs2: notice: (823) jffs2_get_inode_nodes: Node header CRC failed at 0x01e00c. {848f,2fc4,0fef511f,59a3d171} jffs2: Node at 0x0000000c with length 0x00001044 would run over the end of the erase block jffs2: Perhaps the file system was created with the wrong erase size? jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00000010: 0x1044 instead This breaks the filesystem and can lead to KASAN crashes such as: BUG: KASAN: slab-out-of-bounds in jffs2_sum_add_kvec+0x125e/0x15d0 Read of size 4 at addr ffff88802c31e914 by task repro/830 CPU: 0 PID: 830 Comm: repro Not tainted 6.9.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Arch Linux 1.16.3-1-1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0xc6/0x120 print_report+0xc4/0x620 ? __virt_addr_valid+0x308/0x5b0 kasan_report+0xc1/0xf0 ? jffs2_sum_add_kvec+0x125e/0x15d0 ? jffs2_sum_add_kvec+0x125e/0x15d0 jffs2_sum_add_kvec+0x125e/0x15d0 jffs2_flash_direct_writev+0xa8/0xd0 jffs2_flash_writev+0x9c9/0xef0 ? __x64_sys_setxattr+0xc4/0x160 ? do_syscall_64+0x69/0x140 ? entry_SYSCALL_64_after_hwframe+0x76/0x7e [...] Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

0.00 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.24%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu128 products
  • linuxAll versions (No fix recorded) | < 5.4.0-192.212 | < 5.15.0-121.131 | < 6.8.0-40.40
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.4.0-1130.140 | < 5.15.0-1069.75 | < 6.8.0-1013.14
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < 2904e1d9b64f72d291095e3cbb31634f08788b11 | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < 526235dffcac74c7823ed504dfac4f88d84ba5df | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < f0eea095ce8c959b86e1e57fe36ca4fea5ae54f8 | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < a1d21bcd78cf4a4353e1e835789429c6b76aca8b | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < f06969df2e40ab1dc8f4364a5de967830c74a098 | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < af82d8d2179b7277ad627c39e7e0778f1c86ccdb | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < 8d431391320c5c5398ff966fb3a95e68a7def275 | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < 978a12c91b38bf1a213e567f3c20e2beef215f07 | ≥ aa98d7cf59b5b0764d3502662053489585faf2fe, < c6854e5a267c28300ff045480b5a7ee7f6f1d913 | 2.6.18
  • linux_kernel≥ 2.6.18, < 4.19.316 | ≥ 4.20, < 5.4.278 | ≥ 5.5, < 5.10.219 | ≥ 5.11, < 5.15.161 | ≥ 5.16, < 6.1.93 | ≥ 6.2, < 6.6.33 | ≥ 6.7, < 6.8.12 | ≥ 6.9, < 6.9.3
Debian1 product
  • linux< 6.1.94-1 | < 6.8.12-1

3 vendors · 131 products

References

32 links
Show all 32 references