🛡️ CVE-2024-55881 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

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 ]---

Distribution advisory

This page covers CVE-2024-55881 as tracked by Ubuntu, for the package linux. The fix is available in version 6.8.0-60.63; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack vector: Local — a local account, shell or session on the host is needed.
Attack complexity: Low — the attack works reliably, with no preparation.
Privileges required: Low — an ordinary user account is enough.
User interaction: None — nobody has to be tricked into anything.
Scope: Unchanged — the damage stays inside the vulnerable component.
Confidentiality impact: None.
Integrity impact: None.
Availability impact: High — total loss, or loss the attacker controls.

Affected software

UBUNTU-CVE-2024-55881 is recorded against 123 packages.

linux (fixed in 6.8.0-60.63)
linux-allwinner-5.19
linux-aws (fixed in 6.8.0-1029.31)
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.15 (fixed in 5.15.0-1080.87~20.04.1)
linux-aws-5.19
linux-aws-5.3
linux-aws-5.8
linux-aws-6.2
linux-aws-6.5
linux-aws-6.8 (fixed in 6.8.0-1029.31~22.04.1)
linux-aws-fips (fixed in 5.15.0-1080.87+fips1)
linux-azure (fixed in 6.8.0-1029.34)
linux-azure-5.11
linux-azure-5.13
linux-azure-5.15 (fixed in 5.15.0-1086.95~20.04.1)
linux-azure-5.19
linux-azure-5.3
linux-azure-5.8
linux-azure-6.11 (fixed in 6.11.0-1012.12~24.04.1)
linux-azure-6.2
linux-azure-6.5

Show the remaining 99 packages

linux-azure-6.8 (fixed in 6.8.0-1029.34~22.04.1)
linux-azure-edge
linux-azure-fde
linux-azure-fde-5.19
linux-azure-fde-6.2
linux-azure-fips (fixed in 5.15.0-1083.92+fips1)
linux-azure-nvidia (fixed in 6.8.0-1016.17)
linux-bluefield
linux-fips (fixed in 6.8.0-78.78+fips1)
linux-gcp (fixed in 6.8.0-1030.32)
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.15 (fixed in 5.15.0-1081.90~20.04.1)
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.8
linux-gcp-6.11 (fixed in 6.11.0-1011.11~24.04.1)
linux-gcp-6.2
linux-gcp-6.5
linux-gcp-6.8 (fixed in 6.8.0-1030.32~22.04.1)
linux-gcp-fips (fixed in 5.15.0-1079.88+fips1)
linux-gke (fixed in 6.8.0-1025.29)
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop (fixed in 6.8.0-1012.14)
linux-gkeop-5.15
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.15 (fixed in 5.15.0-136.147~20.04.1)
linux-hwe-5.19
linux-hwe-5.8
linux-hwe-6.11 (fixed in 6.11.0-21.21~24.04.1)
linux-hwe-6.2
linux-hwe-6.5
linux-hwe-6.8 (fixed in 6.8.0-60.63~22.04.1)
linux-hwe-edge
linux-ibm (fixed in 6.8.0-1026.26)
linux-ibm-5.15 (fixed in 5.15.0-1074.77~20.04.1)
linux-ibm-6.8 (fixed in 6.8.0-1026.26~22.04.1)
linux-intel-5.13
linux-intel-iot-realtime (fixed in 5.15.0-1073.75)
linux-intel-iotg (fixed in 5.15.0-1075.81)
linux-intel-iotg-5.15 (fixed in 5.15.0-1077.83~20.04.1)
linux-kvm (fixed in 5.15.0-1076.81)
linux-lowlatency (fixed in 6.8.0-60.63.1)
linux-lowlatency-hwe-5.15 (fixed in 5.15.0-135.146~20.04.1)
linux-lowlatency-hwe-5.19
linux-lowlatency-hwe-6.2
linux-lowlatency-hwe-6.5
linux-lowlatency-hwe-6.8 (fixed in 6.8.0-60.63.1~22.04.1)
linux-nvidia (fixed in 6.8.0-1028.31)
linux-nvidia-6.11 (fixed in 6.11.0-1007.7)
linux-nvidia-6.2
linux-nvidia-6.5
linux-nvidia-6.8 (fixed in 6.8.0-1028.31~22.04.1)
linux-nvidia-lowlatency (fixed in 6.8.0-1028.31.1)
linux-nvidia-tegra (fixed in 6.8.0-1008.8)
linux-nvidia-tegra-5.15 (fixed in 5.15.0-1039.39~20.04.1)
linux-nvidia-tegra-igx (fixed in 5.15.0-1021.21)
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.14
linux-oem-5.17
linux-oem-5.6
linux-oem-6.0
linux-oem-6.1
linux-oem-6.11 (fixed in 6.11.0-1017.17)
linux-oem-6.5
linux-oem-6.8 (fixed in 6.8.0-1028.28)
linux-oracle (fixed in 6.8.0-1026.27)
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.15 (fixed in 5.15.0-1077.83~20.04.1)
linux-oracle-5.3
linux-oracle-5.8
linux-oracle-6.5
linux-oracle-6.8 (fixed in 6.8.0-1026.27~22.04.1)
linux-raspi (fixed in 6.8.0-1028.32)
linux-raspi-realtime (fixed in 6.8.0-2023.24)
linux-raspi2
linux-realtime (fixed in 6.8.1-1022.23)
linux-realtime-6.8 (fixed in 6.8.1-1022.23~22.04.1)
linux-riscv (fixed in 6.8.0-60.63.1)
linux-riscv-5.11
linux-riscv-5.15 (fixed in 5.15.0-1075.79~20.04.1)
linux-riscv-5.19
linux-riscv-5.8
linux-riscv-6.5
linux-riscv-6.8 (fixed in 6.8.0-62.65~22.04.1)
linux-starfive-5.19
linux-starfive-6.2
linux-starfive-6.5
linux-xilinx (fixed in 6.8.0-1017.18)
linux-xilinx-zynqmp (fixed in 5.15.0-1044.48)

Timeline and source

Published on 11 January 2025 and last revised on 17 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

Other advisories for this package

linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

DEBIAN-CVE-2022-4994 (published 30 Jul 2026)
CVE-2026-35233 (4.4 Medium, published 1 May 2026)
CVE-2026-21996 (3.3 Low, published 1 May 2026)
CVE-2026-21991 (5.5 Medium, published 16 Mar 2026)
CGA-w6xv-3fg4-grm5 (published 29 Jan 2026)
CGA-mcwh-q4vm-9f29 (published 29 Jan 2026)
CGA-434c-h783-9v24 (published 7 Jan 2026)
CGA-fmgm-3rrr-58xf (published 7 Jan 2026)

CVE-2024-55881 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

BellSoft — BELL-CVE-2024-55881 Base record — CVE-2024-55881 Debian — DEBIAN-CVE-2024-55881

Details

Severity Unknown

CVSS Score N/A

CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2025-01-11

Updated 2026-08-20

Modified 2026-08-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
linux	—	6.8.0-60.63
linux-allwinner-5.19	—	—
linux-aws	—	6.8.0-1029.31
linux-aws-5.0	—	—
linux-aws-5.11	—	—
linux-aws-5.13	—	—
linux-aws-5.15	—	5.15.0-1080.87~20.04.1
linux-aws-5.19	—	—
linux-aws-5.3	—	—
linux-aws-5.8	—	—
linux-aws-6.2	—	—
linux-aws-6.5	—	—
linux-aws-6.8	—	6.8.0-1029.31~22.04.1
linux-aws-fips	—	5.15.0-1080.87+fips1
linux-azure	—	6.8.0-1029.34
linux-azure-5.11	—	—
linux-azure-5.13	—	—
linux-azure-5.15	—	5.15.0-1086.95~20.04.1
linux-azure-5.19	—	—
linux-azure-5.3	—	—
linux-azure-5.8	—	—
linux-azure-6.11	—	6.11.0-1012.12~24.04.1
linux-azure-6.2	—	—
linux-azure-6.5	—	—
linux-azure-6.8	—	6.8.0-1029.34~22.04.1
linux-azure-edge	—	—
linux-azure-fde	—	—
linux-azure-fde-5.19	—	—
linux-azure-fde-6.2	—	—
linux-azure-fips	—	5.15.0-1083.92+fips1
linux-azure-nvidia	—	6.8.0-1016.17
linux-bluefield	—	—
linux-fips	—	6.8.0-78.78+fips1
linux-gcp	—	6.8.0-1030.32
linux-gcp-5.11	—	—
linux-gcp-5.13	—	—
linux-gcp-5.15	—	5.15.0-1081.90~20.04.1
linux-gcp-5.19	—	—
linux-gcp-5.3	—	—
linux-gcp-5.8	—	—
linux-gcp-6.11	—	6.11.0-1011.11~24.04.1
linux-gcp-6.2	—	—
linux-gcp-6.5	—	—
linux-gcp-6.8	—	6.8.0-1030.32~22.04.1
linux-gcp-fips	—	5.15.0-1079.88+fips1
linux-gke	—	6.8.0-1025.29
linux-gke-4.15	—	—
linux-gke-5.15	—	—
linux-gke-5.4	—	—
linux-gkeop	—	6.8.0-1012.14
linux-gkeop-5.15	—	—
linux-gkeop-5.4	—	—
linux-hwe	—	—
linux-hwe-5.11	—	—
linux-hwe-5.13	—	—
linux-hwe-5.15	—	5.15.0-136.147~20.04.1
linux-hwe-5.19	—	—
linux-hwe-5.8	—	—
linux-hwe-6.11	—	6.11.0-21.21~24.04.1
linux-hwe-6.2	—	—
linux-hwe-6.5	—	—
linux-hwe-6.8	—	6.8.0-60.63~22.04.1
linux-hwe-edge	—	—
linux-ibm	—	6.8.0-1026.26
linux-ibm-5.15	—	5.15.0-1074.77~20.04.1
linux-ibm-6.8	—	6.8.0-1026.26~22.04.1
linux-intel-5.13	—	—
linux-intel-iot-realtime	—	5.15.0-1073.75
linux-intel-iotg	—	5.15.0-1075.81
linux-intel-iotg-5.15	—	5.15.0-1077.83~20.04.1
linux-kvm	—	5.15.0-1076.81
linux-lowlatency	—	6.8.0-60.63.1
linux-lowlatency-hwe-5.15	—	5.15.0-135.146~20.04.1
linux-lowlatency-hwe-5.19	—	—
linux-lowlatency-hwe-6.2	—	—
linux-lowlatency-hwe-6.5	—	—
linux-lowlatency-hwe-6.8	—	6.8.0-60.63.1~22.04.1
linux-nvidia	—	6.8.0-1028.31
linux-nvidia-6.11	—	6.11.0-1007.7
linux-nvidia-6.2	—	—
linux-nvidia-6.5	—	—
linux-nvidia-6.8	—	6.8.0-1028.31~22.04.1
linux-nvidia-lowlatency	—	6.8.0-1028.31.1
linux-nvidia-tegra	—	6.8.0-1008.8
linux-nvidia-tegra-5.15	—	5.15.0-1039.39~20.04.1
linux-nvidia-tegra-igx	—	5.15.0-1021.21
linux-oem	—	—
linux-oem-5.10	—	—
linux-oem-5.13	—	—
linux-oem-5.14	—	—
linux-oem-5.17	—	—
linux-oem-5.6	—	—
linux-oem-6.0	—	—
linux-oem-6.1	—	—
linux-oem-6.11	—	6.11.0-1017.17
linux-oem-6.5	—	—
linux-oem-6.8	—	6.8.0-1028.28
linux-oracle	—	6.8.0-1026.27
linux-oracle-5.0	—	—
linux-oracle-5.11	—	—
linux-oracle-5.13	—	—
linux-oracle-5.15	—	5.15.0-1077.83~20.04.1
linux-oracle-5.3	—	—
linux-oracle-5.8	—	—
linux-oracle-6.5	—	—
linux-oracle-6.8	—	6.8.0-1026.27~22.04.1
linux-raspi	—	6.8.0-1028.32
linux-raspi-realtime	—	6.8.0-2023.24
linux-raspi2	—	—
linux-realtime	—	6.8.1-1022.23
linux-realtime-6.8	—	6.8.1-1022.23~22.04.1
linux-riscv	—	6.8.0-60.63.1
linux-riscv-5.11	—	—
linux-riscv-5.15	—	5.15.0-1075.79~20.04.1
linux-riscv-5.19	—	—
linux-riscv-5.8	—	—
linux-riscv-6.5	—	—
linux-riscv-6.8	—	6.8.0-62.65~22.04.1
linux-starfive-5.19	—	—
linux-starfive-6.2	—	—
linux-starfive-6.5	—	—
linux-xilinx	—	6.8.0-1017.18
linux-xilinx-zynqmp	—	5.15.0-1044.48

References

REPORT https://ubuntu.com/security/CVE-2024-55881

REPORT https://www.cve.org/CVERecord?id=CVE-2024-55881

REPORT https://git.kernel.org/linus/9b42d1e8e4fe9dc631162c04caa69b0d1860b0f0

REPORT https://git.kernel.org/stable/c/0840d360a8909c722fb62459f42836afe32ededb

REPORT https://git.kernel.org/stable/c/22b5c2acd65dbe949032f619d4758a35a82fffc3

REPORT https://git.kernel.org/stable/c/3d2634ec0d1dbe8f4b511cf5261f327c6a76f4b6

REPORT https://git.kernel.org/stable/c/7ed4db315094963de0678a8adfd43c46471b9349

REPORT https://git.kernel.org/stable/c/9b42d1e8e4fe9dc631162c04caa69b0d1860b0f0

ADVISORY https://ubuntu.com/security/notices/USN-7379-1

ADVISORY https://ubuntu.com/security/notices/USN-7380-1

ADVISORY https://ubuntu.com/security/notices/USN-7381-1

ADVISORY https://ubuntu.com/security/notices/USN-7382-1

ADVISORY https://ubuntu.com/security/notices/USN-7387-1

ADVISORY https://ubuntu.com/security/notices/USN-7388-1

ADVISORY https://ubuntu.com/security/notices/USN-7389-1

ADVISORY https://ubuntu.com/security/notices/USN-7390-1

ADVISORY https://ubuntu.com/security/notices/USN-7387-2

ADVISORY https://ubuntu.com/security/notices/USN-7387-3

ADVISORY https://ubuntu.com/security/notices/USN-7379-2

ADVISORY https://ubuntu.com/security/notices/USN-7407-1

ADVISORY https://ubuntu.com/security/notices/USN-7421-1

ADVISORY https://ubuntu.com/security/notices/USN-7458-1

ADVISORY https://ubuntu.com/security/notices/USN-7459-1

ADVISORY https://ubuntu.com/security/notices/USN-7459-2

ADVISORY https://ubuntu.com/security/notices/USN-7513-1

ADVISORY https://ubuntu.com/security/notices/USN-7513-2

ADVISORY https://ubuntu.com/security/notices/USN-7514-1

ADVISORY https://ubuntu.com/security/notices/USN-7515-1

ADVISORY https://ubuntu.com/security/notices/USN-7513-3

ADVISORY https://ubuntu.com/security/notices/USN-7522-1

ADVISORY https://ubuntu.com/security/notices/USN-7515-2

ADVISORY https://ubuntu.com/security/notices/USN-7523-1

ADVISORY https://ubuntu.com/security/notices/USN-7524-1

ADVISORY https://ubuntu.com/security/notices/USN-7513-4

ADVISORY https://ubuntu.com/security/notices/USN-7513-5

🔗 NVD 🔗 Mitre

Similar Threats

Vulnerability Monitoring

Track new vulnerabilities in linux

UBUNTU-CVE-2024-55881 is rated CVSS 5.5 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.

Set Up Free Alerts →

No credit card required · Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

🛡️ CVE-2024-55881 on Ubuntu — linux

Description

Distribution advisory

How this vulnerability can be exploited

CVSS metrics in full

Affected software

Timeline and source

References

Other advisories for this package

CVE-2024-55881 on other distributions

Track new vulnerabilities in linux

Browse related advisories

Company

Resources

Services

Trusted

Subscribe