CVE-2025-68229

In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show() If the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we attempt to dereference it in tcm_loop_tpg_address_show() we will get a segfault, see below for an example. So, check tl_hba->sh before dereferencing it. Unable to allocate struct scsi_host BUG: kernel NULL pointer dereference, address: 0000000000000194 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1 Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024 RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop] ... Call Trace: <TASK> configfs_read_iter+0x12d/0x1d0 [configfs] vfs_read+0x1b5/0x300 ksys_read+0x6f/0xf0 ...

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b
https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe
https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b
https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268
https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6
https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663
https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc
https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-16 14:15

Updated : 2026-06-17 09:58

NVD link : CVE-2025-68229

Mitre link : CVE-2025-68229

CVE.ORG link : CVE-2025-68229

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2025-68229", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68229", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-16T16:20:41.324654Z"}}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "63f511d3855f7f4b35dd63dbc58fc3d935a81268", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "3d8c517f6eb27e47b1a198e05f8023038329b40b", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "f449a1edd7a13bb025aaf9342ea6f8bf92684bbf", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "1c9ba455b5073253ceaadae4859546e38e8261fe", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "a6ef60898ddaf1414592ce3e5b0d94276d631663", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "72e8831079266749a7023618a0de2f289a9dced6", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "13aff3b8a7184281b134698704d6c06863a8361b", "versionType": "git"}, {"status": "affected", "version": "2628b352c3d4905adf8129ea50900bd980b6ccef", "lessThan": "e6965188f84a7883e6a0d3448e86b0cf29b24dfc", "versionType": "git"}], "programFiles": ["drivers/target/loopback/tcm_loop.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "4.5"}, {"status": "unaffected", "version": "0", "lessThan": "4.5", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.302", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.247", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.197", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.159", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.118", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.60", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.17.10", "versionType": "semver", "lessThanOrEqual": "6.17.*"}, {"status": "unaffected", "version": "6.18", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/target/loopback/tcm_loop.c"], "defaultStatus": "affected"}]}], "published": "2025-12-16T14:15:57.067", "references": [{"url": "https://git.kernel.org/stable/c/13aff3b8a7184281b134698704d6c06863a8361b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1c9ba455b5073253ceaadae4859546e38e8261fe", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/3d8c517f6eb27e47b1a198e05f8023038329b40b", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/63f511d3855f7f4b35dd63dbc58fc3d935a81268", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/72e8831079266749a7023618a0de2f289a9dced6", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/a6ef60898ddaf1414592ce3e5b0d94276d631663", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e6965188f84a7883e6a0d3448e86b0cf29b24dfc", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/f449a1edd7a13bb025aaf9342ea6f8bf92684bbf", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Deferred", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: tcm_loop: Fix segfault in tcm_loop_tpg_address_show()\n\nIf the allocation of tl_hba->sh fails in tcm_loop_driver_probe() and we\nattempt to dereference it in tcm_loop_tpg_address_show() we will get a\nsegfault, see below for an example. So, check tl_hba->sh before\ndereferencing it.\n\n Unable to allocate struct scsi_host\n BUG: kernel NULL pointer dereference, address: 0000000000000194\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 0 P4D 0\n Oops: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 1 PID: 8356 Comm: tokio-runtime-w Not tainted 6.6.104.2-4.azl3 #1\n Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 09/28/2024\n RIP: 0010:tcm_loop_tpg_address_show+0x2e/0x50 [tcm_loop]\n...\n Call Trace:\n <TASK>\n configfs_read_iter+0x12d/0x1d0 [configfs]\n vfs_read+0x1b5/0x300\n ksys_read+0x6f/0xf0\n..."}], "lastModified": "2026-06-17T09:58:46.260", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}