5.5

CVE-2024-55881: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-55881DEBIAN-CVE-2024-55881
Published 11-01-2025Last modified 23-05-2026
Open JSON

Vulnerability summary

CVE-2024-55881 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.3% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.21%
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 36 · Related 35
DLA-4076-1MGASA-2025-0030MGASA-2025-0032SUSE-SU-2025:0289-1SUSE-SU-2025:0428-1SUSE-SU-2025:0499-1

Timeline

  1. 11-01-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Play nice with protected guests in complete_hypercall_exit() Use is_64_bit_hypercall() instead of is_64_bit_mode() to detect a 64-bit hypercall when completing said hypercall. For guests with protected state, e.g. SEV-ES and SEV-SNP, KVM must assume the hypercall was made in 64-bit mode as the vCPU state needed to detect 64-bit mode is unavailable. Hacking the sev_smoke_test selftest to generate a KVM_HC_MAP_GPA_RANGE hypercall via VMGEXIT trips the WARN: ------------[ cut here ]------------ WARNING: CPU: 273 PID: 326626 at arch/x86/kvm/x86.h:180 complete_hypercall_exit+0x44/0xe0 [kvm] Modules linked in: kvm_amd kvm ... [last unloaded: kvm] CPU: 273 UID: 0 PID: 326626 Comm: sev_smoke_test Not tainted 6.12.0-smp--392e932fa0f3-feat #470 Hardware name: Google Astoria/astoria, BIOS 0.20240617.0-0 06/17/2024 RIP: 0010:complete_hypercall_exit+0x44/0xe0 [kvm] Call Trace: <TASK> kvm_arch_vcpu_ioctl_run+0x2400/0x2720 [kvm] kvm_vcpu_ioctl+0x54f/0x630 [kvm] __se_sys_ioctl+0x6b/0xc0 do_syscall_64+0x83/0x160 entry_SYSCALL_64_after_hwframe+0x76/0x7e </TASK> ---[ end trace 0000000000000000 ]---

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

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

No weakness data has been published for this record.

Affected systems

Ubuntu123 products
  • linux< 5.15.0-135.146 | < 6.8.0-60.63
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1080.87 | < 6.8.0-1029.31
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5969e2435cbd7f0ce8c28d717bfc39987ee8d8f1, < 0840d360a8909c722fb62459f42836afe32ededb | ≥ b5aead0064f33ae5e693a364e3204fe1c0ac9af2, < 7ed4db315094963de0678a8adfd43c46471b9349 | ≥ b5aead0064f33ae5e693a364e3204fe1c0ac9af2, < 3d2634ec0d1dbe8f4b511cf5261f327c6a76f4b6 | ≥ b5aead0064f33ae5e693a364e3204fe1c0ac9af2, < 22b5c2acd65dbe949032f619d4758a35a82fffc3 | ≥ b5aead0064f33ae5e693a364e3204fe1c0ac9af2, < 9b42d1e8e4fe9dc631162c04caa69b0d1860b0f0 | ≥ 5.15.5, < 5.15.176 | 5.16
  • linux_kernelEOL≥ 5.15.5, < 5.15.176 | ≥ 5.16.1, < 6.1.122 | ≥ 6.2, < 6.6.68 | ≥ 6.7, < 6.12.7 | 5.16 | 5.16:rc2 | 5.16:rc3 | 5.16:rc4 | 5.16:rc5 | 5.16:rc6 | 5.16:rc7 | 5.16:rc8 | 6.13:rc1 | 6.13:rc2 | 6.13:rc3
Debian1 product
  • linux< 6.1.123-1 | < 6.12.8-1

3 vendors · 126 products

References

37 links
Show all 37 references