{"vulnerability": "CVE-2024-35846", "sightings": [{"uuid": "a1893ba1-5fd1-43c1-a6a2-6ddaf1d0ce8a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2024-35846", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/14755", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2024-35846\n\ud83d\udd25 CVSS Score: N/A\n\ud83d\udd39 Description: In the Linux kernel, the following vulnerability has been resolved:\n\nmm: zswap: fix shrinker NULL crash with cgroup_disable=memory\n\nChristian reports a NULL deref in zswap that he bisected down to the zswap\nshrinker.  The issue also cropped up in the bug trackers of libguestfs [1]\nand the Red Hat bugzilla [2].\n\nThe problem is that when memcg is disabled with the boot time flag, the\nzswap shrinker might get called with sc->memcg == NULL.  This is okay in\nmany places, like the lruvec operations.  But it crashes in\nmemcg_page_state() - which is only used due to the non-node accounting of\ncgroup's the zswap memory to begin with.\n\nNhat spotted that the memcg can be NULL in the memcg-disabled case, and I\nwas then able to reproduce the crash locally as well.\n\n[1] https://github.com/libguestfs/libguestfs/issues/139\n[2] https://bugzilla.redhat.com/show_bug.cgi?id=2275252\n\ud83d\udccf Published: 2024-05-17T14:47:25.503Z\n\ud83d\udccf Modified: 2025-05-04T09:06:43.875Z\n\ud83d\udd17 References:\n1. https://git.kernel.org/stable/c/b0fdabc908a7f81d12382c87ca9e46a9c2e14042\n2. https://git.kernel.org/stable/c/682886ec69d22363819a83ddddd5d66cb5c791e1", "creation_timestamp": "2025-05-04T09:18:09.000000Z"}]}