{ "threat_severity" : "Moderate", "public_date" : "2025-05-02T00:00:00Z", "bugzilla" : { "description" : "kernel: net/iucv: Fix size of interrupt data", "id" : "2363769", "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2363769" }, "cvss3" : { "cvss3_base_score" : "5.5", "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status" : "verified" }, "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnet/iucv: Fix size of interrupt data\niucv_irq_data needs to be 4 bytes larger.\nThese bytes are not used by the iucv module, but written by\nthe z/VM hypervisor in case a CPU is deconfigured.\nReported as:\nBUG dma-kmalloc-64 (Not tainted): kmalloc Redzone overwritten\n-----------------------------------------------------------------------------\n0x0000000000400564-0x0000000000400567 @offset=1380. First byte 0x80 instead of 0xcc\nAllocated in iucv_cpu_prepare+0x44/0xd0 age=167839 cpu=2 pid=1\n__kmem_cache_alloc_node+0x166/0x450\nkmalloc_node_trace+0x3a/0x70\niucv_cpu_prepare+0x44/0xd0\ncpuhp_invoke_callback+0x156/0x2f0\ncpuhp_issue_call+0xf0/0x298\n__cpuhp_setup_state_cpuslocked+0x136/0x338\n__cpuhp_setup_state+0xf4/0x288\niucv_init+0xf4/0x280\ndo_one_initcall+0x78/0x390\ndo_initcalls+0x11a/0x140\nkernel_init_freeable+0x25e/0x2a0\nkernel_init+0x2e/0x170\n__ret_from_fork+0x3c/0x58\nret_from_fork+0xa/0x40\nFreed in iucv_init+0x92/0x280 age=167839 cpu=2 pid=1\n__kmem_cache_free+0x308/0x358\niucv_init+0x92/0x280\ndo_one_initcall+0x78/0x390\ndo_initcalls+0x11a/0x140\nkernel_init_freeable+0x25e/0x2a0\nkernel_init+0x2e/0x170\n__ret_from_fork+0x3c/0x58\nret_from_fork+0xa/0x40\nSlab 0x0000037200010000 objects=32 used=30 fp=0x0000000000400640 flags=0x1ffff00000010200(slab|head|node=0|zone=0|\nObject 0x0000000000400540 @offset=1344 fp=0x0000000000000000\nRedzone 0000000000400500: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................\nRedzone 0000000000400510: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................\nRedzone 0000000000400520: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................\nRedzone 0000000000400530: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................\nObject 0000000000400540: 00 01 00 03 00 00 00 00 00 00 00 00 00 00 00 00 ................\nObject 0000000000400550: f3 86 81 f2 f4 82 f8 82 f0 f0 f0 f0 f0 f0 f0 f2 ................\nObject 0000000000400560: 00 00 00 00 80 00 00 00 cc cc cc cc cc cc cc cc ................\nObject 0000000000400570: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ................\nRedzone 0000000000400580: cc cc cc cc cc cc cc cc ........\nPadding 00000000004005d4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ\nPadding 00000000004005e4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ\nPadding 00000000004005f4: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZ\nCPU: 6 PID: 121030 Comm: 116-pai-crypto. Not tainted 6.3.0-20230221.rc0.git4.99b8246b2d71.300.fc37.s390x+debug #1\nHardware name: IBM 3931 A01 704 (z/VM 7.3.0)\nCall Trace:\n[<000000032aa034ec>] dump_stack_lvl+0xac/0x100\n[<0000000329f5a6cc>] check_bytes_and_report+0x104/0x140\n[<0000000329f5aa78>] check_object+0x370/0x3c0\n[<0000000329f5ede6>] free_debug_processing+0x15e/0x348\n[<0000000329f5f06a>] free_to_partial_list+0x9a/0x2f0\n[<0000000329f5f4a4>] __slab_free+0x1e4/0x3a8\n[<0000000329f61768>] __kmem_cache_free+0x308/0x358\n[<000000032a91465c>] iucv_cpu_dead+0x6c/0x88\n[<0000000329c2fc66>] cpuhp_invoke_callback+0x156/0x2f0\n[<000000032aa062da>] _cpu_down.constprop.0+0x22a/0x5e0\n[<0000000329c3243e>] cpu_device_down+0x4e/0x78\n[<000000032a61dee0>] device_offline+0xc8/0x118\n[<000000032a61e048>] online_store+0x60/0xe0\n[<000000032a08b6b0>] kernfs_fop_write_iter+0x150/0x1e8\n[<0000000329fab65c>] vfs_write+0x174/0x360\n[<0000000329fab9fc>] ksys_write+0x74/0x100\n[<000000032aa03a5a>] __do_syscall+0x1da/0x208\n[<000000032aa177b2>] system_call+0x82/0xb0\nINFO: lockdep is turned off.\nFIX dma-kmalloc-64: Restoring kmalloc Redzone 0x0000000000400564-0x0000000000400567=0xcc\nFIX dma-kmalloc-64: Object at 0x0000000000400540 not freed" ], "affected_release" : [ { "product_name" : "Red Hat Enterprise Linux 8", "release_date" : "2023-11-14T00:00:00Z", "advisory" : "RHSA-2023:7077", "cpe" : "cpe:/o:redhat:enterprise_linux:8", "package" : "kernel-0:4.18.0-513.5.1.el8_9" }, { "product_name" : "Red Hat Enterprise Linux 9", "release_date" : "2023-11-07T00:00:00Z", "advisory" : "RHSA-2023:6583", "cpe" : "cpe:/a:redhat:enterprise_linux:9", "package" : "kernel-0:5.14.0-362.8.1.el9_3" }, { "product_name" : "Red Hat Enterprise Linux 9", "release_date" : "2023-11-07T00:00:00Z", "advisory" : "RHSA-2023:6583", "cpe" : "cpe:/o:redhat:enterprise_linux:9", "package" : "kernel-0:5.14.0-362.8.1.el9_3" } ], "package_state" : [ { "product_name" : "Red Hat Enterprise Linux 10", "fix_state" : "Not affected", "package_name" : "kernel", "cpe" : "cpe:/o:redhat:enterprise_linux:10" }, { "product_name" : "Red Hat Enterprise Linux 6", "fix_state" : "Fix deferred", "package_name" : "kernel", "cpe" : "cpe:/o:redhat:enterprise_linux:6" }, { "product_name" : "Red Hat Enterprise Linux 7", "fix_state" : "Fix deferred", "package_name" : "kernel", "cpe" : "cpe:/o:redhat:enterprise_linux:7" }, { "product_name" : "Red Hat Enterprise Linux 7", "fix_state" : "Fix deferred", "package_name" : "kernel-rt", "cpe" : "cpe:/o:redhat:enterprise_linux:7" }, { "product_name" : "Red Hat Enterprise Linux 8", "fix_state" : "Fix deferred", "package_name" : "kernel-rt", "cpe" : "cpe:/o:redhat:enterprise_linux:8" }, { "product_name" : "Red Hat Enterprise Linux 9", "fix_state" : "Fix deferred", "package_name" : "kernel-rt", "cpe" : "cpe:/o:redhat:enterprise_linux:9" } ], "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-53108\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53108\nhttps://lore.kernel.org/linux-cve-announce/2025050226-CVE-2023-53108-d921@gregkh/T" ], "name" : "CVE-2023-53108", "csaw" : false }