{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-68325 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-68325 is a vulnerability in Linux, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-68325 and fix it if it is affected.\n\nWhat it is: CVE-2025-68325 is a vulnerability in Linux, published on 18 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-68325 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-68325/ (Markdown: https://insights.sbomify.com/CVE-2025-68325/index.md)","id":"CVE-2025-68325","markdown":"https://insights.sbomify.com/CVE-2025-68325/index.md","name":"CVE-2025-68325","record":{"aliases":["BELL-CVE-2025-68325","DEBIAN-CVE-2025-68325","GHSA-vwv2-fc39-c5f6","ROOT-OS-DEBIAN-11-CVE-2025-68325","ROOT-OS-DEBIAN-12-CVE-2025-68325","ROOT-OS-DEBIAN-13-CVE-2025-68325","ROOT-OS-UBUNTU-2204-CVE-2025-68325","ROOT-OS-UBUNTU-2404-CVE-2025-68325","UBUNTU-CVE-2025-68325"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Linux kernel","requires_auth":"none","summary":"A logic error in the Linux kernel's CAKE qdisc can cause a NULL pointer dereference, leading to a system crash or denial of service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_cake: Fix incorrect qlen reduction in cake_drop\n\nIn cake_drop(), qdisc_tree_reduce_backlog() is used to update the qlen\nand backlog of the qdisc hierarchy. Its caller, cake_enqueue(), assumes\nthat the parent qdisc will enqueue the current packet. However, this\nassumption breaks when cake_enqueue() returns NET_XMIT_CN: the parent\nqdisc stops enqueuing current packet, leaving the tree qlen/backlog\naccounting inconsistent. This mismatch can lead to a NULL dereference\n(e.g., when the parent Qdisc is qfq_qdisc).\n\nThis patch computes the qlen/backlog delta in a more robust way by\nobserving the difference before and after the series of cake_drop()\ncalls, and then compensates the qdisc tree accounting if cake_enqueue()\nreturns NET_XMIT_CN.\n\nTo ensure correct compensation when ACK thinning is enabled, a new\nvariable is introduced to keep qlen unchanged.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2025-12-20","github_poc":1,"max_poc_stars":2,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-12-20T21:45:48Z","kind":"github_poc","ref":"https://github.com/n132/CVE-2025-68325","stars":2,"title":"PoC CVE-2025-68325"}],"tier":"poc_unverified"},"has_fix":true,"headline":"net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop","id":"CVE-2025-68325","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":8,"next":{"headline":"drm/xe/guc: Fix stack_depot usage","id":"CVE-2025-68326"},"packages":[],"prev":{"headline":"scsi: imm: Fix use-after-free bug caused by unfinished delayed work","id":"CVE-2025-68324"},"products":["Linux"],"published":"2025-12-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"A logic error in the Linux kernel's CAKE qdisc can cause a NULL pointer dereference, leading to a system crash or denial of service.","url":"https://insights.sbomify.com/CVE-2025-68325/"}