Vulnerability-Lookup

OPENSUSE-SU-2026:11506-1

Vulnerability from csaf_opensuse - Published: 2026-08-13 00:00 - Updated: 2026-09-17 17:19

Summary

kernel-devel-7.1.8-1.1 on GA media

Severity

Moderate

Notes

Title of the patch: kernel-devel-7.1.8-1.1 on GA media

Description of the patch: These are all security issues fixed in the kernel-devel-7.1.8-1.1 package on the GA media of openSUSE Tumbleweed.

Patchnames: openSUSE-Tumbleweed-2026-11506

CVE-2026-68081

6.4 (Medium)


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

Affected products

Recommended 16 products

Product	Version	Remediation
Unresolved product id: openSUSE Tumbleweed:kernel-devel-0:7.1.8-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-devel-0:7.1.8-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-devel-0:7.1.8-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-devel-0:7.1.8-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-macros-0:7.1.8-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-macros-0:7.1.8-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-macros-0:7.1.8-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-macros-0:7.1.8-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-0:7.1.8-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-0:7.1.8-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-0:7.1.8-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-0:7.1.8-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-vanilla-0:7.1.8-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-vanilla-0:7.1.8-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-vanilla-0:7.1.8-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:kernel-source-vanilla-0:7.1.8-1.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2026-68082

5.3 (Medium)


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

Affected products

Recommended 16 products, the same list as for CVE-2026-68081

Threats

Impact moderate

References

8 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://www.suse.com/security/cve/CVE-2026-68081/	self
https://www.suse.com/security/cve/CVE-2026-68082/	self
https://www.suse.com/security/cve/CVE-2026-68081	external
https://bugzilla.suse.com/1274580	external
https://www.suse.com/security/cve/CVE-2026-68082	external
https://bugzilla.suse.com/1274581	external

JSON

To clipboard

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          "title": "CVE description"
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}

CVE-2026-68081 (GCVE-0-2026-68081)

Vulnerability from cvelistv5 – Published: 2026-08-08 09:17 – Updated: 2026-08-17 04:58

Title

KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state

Summary

In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state Put all vmcs12 pages if KVM synthesizes a nested VM-Exit due to invalid guest while emulating VMLAUNCH or VMRESUME. The invalid guest state path doesn't use nested_vmx_vmexit() as that API is intended to be used if and only if L2 is active, and the open coded equivalent neglects to put the vmcs12 pages. Failure to put the vmcs12 pages leaks any pinned pages (and/or mappings) if L1 retries VMLAUNCH/VMRESUME. Note, the !from_vmenter scenario doesn't suffer the same problem, as vmx_get_nested_state_pages() only gets/pins/maps the vmcs12 pages if L2 is active, i.e. if a "full" VM-Exit is guaranteed before KVM will retry getting vmcs12 pages.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/7996013b85687034d…
https://git.kernel.org/stable/c/2c87a087c20632d68…
https://git.kernel.org/stable/c/2f2312c422fd2695d…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 96c66e87deeeb3cc78a3b82a1de8e365eec206c1 , < 7996013b85687034d2e820cef94d6404192e3a3d (git) Affected: 96c66e87deeeb3cc78a3b82a1de8e365eec206c1 , < 2c87a087c20632d68920272173b5d7c47f9bcf70 (git) Affected: 96c66e87deeeb3cc78a3b82a1de8e365eec206c1 , < 2f2312c422fd2695da772cecb30c69994b795964 (git)
Linux	Linux	Affected: 5.2 Unaffected: 0 , < 5.2 (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state\n\nPut all vmcs12 pages if KVM synthesizes a nested VM-Exit due to invalid\nguest while emulating VMLAUNCH or VMRESUME.  The invalid guest state path\ndoesn\u0027t use nested_vmx_vmexit() as that API is intended to be used if and\nonly if L2 is active, and the open coded equivalent neglects to put the\nvmcs12 pages.  Failure to put the vmcs12 pages leaks any pinned pages\n(and/or mappings) if L1 retries VMLAUNCH/VMRESUME.\n\nNote, the !from_vmenter scenario doesn\u0027t suffer the same problem, as\nvmx_get_nested_state_pages() only gets/pins/maps the vmcs12 pages if L2 is\nactive, i.e. if a \"full\" VM-Exit is guaranteed before KVM will retry\ngetting vmcs12 pages."
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          "url": "https://git.kernel.org/stable/c/2c87a087c20632d68920272173b5d7c47f9bcf70"
        },
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          "url": "https://git.kernel.org/stable/c/2f2312c422fd2695da772cecb30c69994b795964"
        }
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68081",
    "datePublished": "2026-08-08T09:17:44.795Z",
    "dateReserved": "2026-07-30T09:28:09.367Z",
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}

CVE-2026-68082 (GCVE-0-2026-68082)

Vulnerability from cvelistv5 – Published: 2026-08-08 09:17 – Updated: 2026-08-23 12:45

Title

libceph: fix two unsafe bare decodes in decode_lockers()

Summary

In the Linux kernel, the following vulnerability has been resolved: libceph: fix two unsafe bare decodes in decode_lockers() decode_lockers() in cls_lock_client.c contains two bare decode operations that allow a malicious or compromised OSD to trigger slab-out-of-bounds reads: 1. ceph_decode_32(p) at the num_lockers field has no preceding bounds check. ceph_start_decoding() accepts struct_len=0 as valid -- the internal ceph_decode_need(p, end, 0, bad) always passes -- so when an OSD sends struct_len=0, ceph_start_decoding() returns success with p == end. The immediately following bare ceph_decode_32(p) then reads 4 bytes past the validated buffer boundary. The garbage value is passed directly to kzalloc_objs() as the locker count. The sibling function decode_watchers() in osd_client.c already uses ceph_decode_32_safe() after its own ceph_start_decoding() call. decode_lockers() was the only site using the bare variant. 2. ceph_decode_8(p) after the decode_locker() loop has no preceding bounds check. If an OSD crafts num_lockers such that the loop advances p exactly to end, the subsequent bare ceph_decode_8(p) reads one byte past the validated buffer boundary. The result is passed directly into *type, which is used as a lock type discriminator by callers, giving an OSD-controlled one-byte OOB read with direct influence over the lock type field. Fix both by replacing bare operations with their safe variants: ceph_decode_32(p) -> ceph_decode_32_safe(p, end, *num_lockers, err_inval) ceph_decode_8(p) -> ceph_decode_8_safe(p, end, *type, err_free_lockers) The goto targets differ intentionally: err_inval: is a new label returning -EINVAL directly. It is used for the pre-allocation failure path where *lockers is not yet allocated and must not be passed to ceph_free_lockers(). err_free_lockers: is the existing label. It is used for the post-allocation failure path where *lockers is allocated and must be freed. ret is set to -EINVAL before ceph_decode_8_safe() so that err_free_lockers returns the correct error code on bounds violation. Without this, err_free_lockers would return a stale ret value (0 from the successful decode_locker() loop), silently swallowing the error. -EINVAL is correct for both failure paths. The data received from the OSD is structurally malformed. -ENOMEM would misrepresent the failure class to callers and to stable@ backporters triaging error paths. Attacker model: a malicious or compromised OSD in a multi-tenant Ceph deployment can trigger this against any kernel client that issues the lock.get_info class method (e.g. during RBD exclusive lock acquisition). [ idryomov: trim changelog, formatting ]

Severity

9.8 (Critical)


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

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/c8ade01170a27d8ed…
https://git.kernel.org/stable/c/001835c599899ef1b…
https://git.kernel.org/stable/c/7c422364acd93d7da…
https://git.kernel.org/stable/c/02430f6f729b297e8…
https://git.kernel.org/stable/c/57ba829804fe6d34b…
https://git.kernel.org/stable/c/89df5d71f83f8e278…
https://git.kernel.org/stable/c/a54be593d0b749161…
https://git.kernel.org/stable/c/a109a556115271ca7…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d4ed4a530562881cc5225050e42d96034f405aae , < c8ade01170a27d8ede0d761c255268af81e417f8 (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < 001835c599899ef1bd3506a815110a6374451554 (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < 7c422364acd93d7da1dfc27d6b54635a269653a1 (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < 02430f6f729b297e803d0605871f0a670b4eafd6 (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < 57ba829804fe6d34bbac3b826c4b15c1caa54862 (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < 89df5d71f83f8e2781286798fd8ae5e42cf5f1a7 (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < a54be593d0b749161b08a1e56189b2cb9114267a (git) Affected: d4ed4a530562881cc5225050e42d96034f405aae , < a109a556115271ca7896dcda7b4b7e45e156c227 (git)
Linux	Linux	Affected: 4.9 Unaffected: 0 , < 4.9 (semver) Unaffected: 5.10.266 , ≤ 5.10.* (semver) Unaffected: 5.15.217 , ≤ 5.15.* (semver) Unaffected: 6.1.184 , ≤ 6.1.* (semver) Unaffected: 6.6.153 , ≤ 6.6.* (semver) Unaffected: 6.12.105 , ≤ 6.12.* (semver) Unaffected: 6.18.46 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
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          "product": "Linux",
          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: fix two unsafe bare decodes in decode_lockers()\n\ndecode_lockers() in cls_lock_client.c contains two bare decode operations\nthat allow a malicious or compromised OSD to trigger slab-out-of-bounds\nreads:\n\n1. ceph_decode_32(p) at the num_lockers field has no preceding bounds\n   check. ceph_start_decoding() accepts struct_len=0 as valid -- the\n   internal ceph_decode_need(p, end, 0, bad) always passes -- so when an\n   OSD sends struct_len=0, ceph_start_decoding() returns success with\n   p == end. The immediately following bare ceph_decode_32(p) then reads\n   4 bytes past the validated buffer boundary. The garbage value is\n   passed directly to kzalloc_objs() as the locker count.\n\n   The sibling function decode_watchers() in osd_client.c already uses\n   ceph_decode_32_safe() after its own ceph_start_decoding() call.\n   decode_lockers() was the only site using the bare variant.\n\n2. ceph_decode_8(p) after the decode_locker() loop has no preceding\n   bounds check. If an OSD crafts num_lockers such that the loop\n   advances p exactly to end, the subsequent bare ceph_decode_8(p) reads\n   one byte past the validated buffer boundary. The result is passed\n   directly into *type, which is used as a lock type discriminator by\n   callers, giving an OSD-controlled one-byte OOB read with direct\n   influence over the lock type field.\n\nFix both by replacing bare operations with their safe variants:\n  ceph_decode_32(p) -\u003e ceph_decode_32_safe(p, end, *num_lockers,\n                                           err_inval)\n  ceph_decode_8(p)  -\u003e ceph_decode_8_safe(p, end, *type,\n                                          err_free_lockers)\n\nThe goto targets differ intentionally:\n  err_inval: is a new label returning -EINVAL directly. It is used for\n  the pre-allocation failure path where *lockers is not yet allocated\n  and must not be passed to ceph_free_lockers().\n\n  err_free_lockers: is the existing label. It is used for the\n  post-allocation failure path where *lockers is allocated and must\n  be freed.\n\nret is set to -EINVAL before ceph_decode_8_safe() so that\nerr_free_lockers returns the correct error code on bounds violation.\nWithout this, err_free_lockers would return a stale ret value (0 from\nthe successful decode_locker() loop), silently swallowing the error.\n\n-EINVAL is correct for both failure paths. The data received from the\nOSD is structurally malformed. -ENOMEM would misrepresent the failure\nclass to callers and to stable@ backporters triaging error paths.\n\nAttacker model: a malicious or compromised OSD in a multi-tenant Ceph\ndeployment can trigger this against any kernel client that issues the\nlock.get_info class method (e.g. during RBD exclusive lock acquisition).\n\n[ idryomov: trim changelog, formatting ]"
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              "lang": "en",
              "value": "AV:N - The flaw is reached when libceph decodes a crafted MOSDOpReply for the lock.get_info class method received over the Ceph messenger TCP session from a compromised or malicious OSD; no local syscall or ioctl is required on the victim.\nAC:L - A malicious OSD can deterministically send struct_len=0 or craft num_lockers so the decode pointer reaches end, triggering both bare decodes on every attempt without races, special memory layout, or rare kernel configuration.\nPR:N - The attacker acts as the remote Ceph OSD peer and needs no account or privileges on the victim Linux host; any kernel RBD client connected to a multi-tenant or attacker-controlled cluster is exposed during automatic exclusive-lock operations.\nUI:N - Once an RBD image is mapped, ceph_cls_lock_info() is invoked automatically during exclusive-lock acquisition and object-map lock recovery; no further victim user or administrator action is required at exploit time.\nS:U - The slab out-of-bounds reads and any resulting kernel memory corruption occur entirely within the victim host kernel running the Ceph client, without crossing VM, container, or IOMMU security boundaries.\nC:H - Bare ceph_decode_32/8 past the validated reply boundary perform slab out-of-bounds reads of adjacent kernel memory; the leaked u32 can drive kzalloc_objs() sizing and the OOB u8 directly controls the lock-type field consumed by RBD lock logic.\nI:H - Attacker-influenced out-of-bounds values feed heap allocation sizing and lock-type discrimination in kernel lock-handling paths, providing memory-corruption primitives in a privileged parser that can be leveraged beyond simple information disclosure.\nA:H - Slab out-of-bounds reads can trigger KASAN faults or kernel oops on instrumented builds, and attacker-controlled locker counts can force very large kzalloc attempts causing severe memory pressure, OOM conditions, and loss of availability on RBD client hosts."
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OPENSUSE-SU-2026:11506-1

CVE-2026-68081 (GCVE-0-2026-68081)

CVE-2026-68082 (GCVE-0-2026-68082)

Tags

Sightings

Nomenclature

Related by attack behaviour